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Improve docs
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Victor Zverovich
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doc/index.md
62
doc/index.md
@ -11,10 +11,10 @@ hide:
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<div class="feature">
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<div class="feature">
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<h2>Safety</h2>
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<h2>Safety</h2>
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<p>
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<p>
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Inspired by the Python's formatting facility, {fmt} provides a safe
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Inspired by Python's formatting facility, {fmt} provides a safe replacement
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replacement for the <code>printf</code> family of functions. Errors in format
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for the <code>printf</code> family of functions. Errors in format strings,
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strings, which are a common source of vulnerabilities in C, are <b>reported
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which are a common source of vulnerabilities in C, are <b>reported at
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at compile time</b>. For example:
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compile time</b>. For example:
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<pre><code class="language-cpp"
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<pre><code class="language-cpp"
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>fmt::format("{:d}", "I am not a number");</code></pre>
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>fmt::format("{:d}", "I am not a number");</code></pre>
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@ -30,9 +30,8 @@ hide:
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<div class="feature">
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<div class="feature">
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<h2>Extensibility</h2>
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<h2>Extensibility</h2>
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<p>
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<p>
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Formatting of most <b>standard types</b> including all containers, dates and
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Formatting of most <b>standard types</b>, including all containers, dates,
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times is <b>supported out-of-the-box</b>.
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and times is <b>supported out-of-the-box</b>. For example:
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For example:
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<pre><code class="language-cpp"
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<pre><code class="language-cpp"
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>fmt::print("{}", std::vector{1, 2, 3});</code></pre>
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>fmt::print("{}", std::vector{1, 2, 3});</code></pre>
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@ -51,12 +50,12 @@ hide:
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<h2>Performance</h2>
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<h2>Performance</h2>
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<p>
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<p>
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{fmt} can be anywhere from <b>tens of percent to 20-30 times faster</b> than
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{fmt} can be anywhere from <b>tens of percent to 20-30 times faster</b> than
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iostreams and <code>sprintf</code>, especially on numeric formatting.
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iostreams and <code>sprintf</code>, especially for numeric formatting.
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<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="20 0 550 300" aria-label="A chart." style="overflow: hidden;"><defs id="_ABSTRACT_RENDERER_ID_0"><clipPath id="_ABSTRACT_RENDERER_ID_1"><rect x="120" y="45" width="560" height="210"></rect></clipPath></defs><rect x="0" y="0" width="800" height="300" stroke="none" stroke-width="0" fill="#ffffff"></rect><g><text text-anchor="start" x="120" y="27.05" font-family="Arial" font-size="13" font-weight="bold" stroke="none" stroke-width="0" fill="#000000">double to string</text><rect x="120" y="16" width="560" height="13" stroke="none" stroke-width="0" fill-opacity="0" fill="#ffffff"></rect></g><g><rect x="120" y="45" width="560" height="210" stroke="none" stroke-width="0" fill-opacity="0" fill="#ffffff"></rect><g clip-path="url(#_ABSTRACT_RENDERER_ID_1)"><g><rect x="120" y="45" width="1" height="210" stroke="none" stroke-width="0" fill="#cccccc"></rect><rect x="213" y="45" width="1" height="210" stroke="none" stroke-width="0" fill="#cccccc"></rect><rect x="306" y="45" width="1" height="210" stroke="none" stroke-width="0" fill="#cccccc"></rect><rect x="400" y="45" width="1" height="210" stroke="none" stroke-width="0" fill="#cccccc"></rect><rect x="493" y="45" width="1" height="210" stroke="none" stroke-width="0" fill="#cccccc"></rect><rect x="586" y="45" width="1" height="210" stroke="none" stroke-width="0" fill="#cccccc"></rect><rect x="679" y="45" width="1" height="210" stroke="none" stroke-width="0" fill="#cccccc"></rect></g><g><rect x="121" y="53" width="450" height="26" stroke="#ff9900" stroke-width="1" fill="#ff9900"></rect><rect x="121" y="95" width="421" height="26" stroke="#109618" stroke-width="1" fill="#109618"></rect><rect x="121" y="137" width="341" height="26" stroke="#990099" stroke-width="1" fill="#990099"></rect><rect x="121" y="179" width="31" height="26" stroke="#3366cc" stroke-width="1" fill="#3366cc"></rect><rect x="121" y="221" width="15" height="26" stroke="#dc3912" stroke-width="1" fill="#dc3912"></rect></g><g><rect x="120" y="45" width="1" height="210" stroke="none" stroke-width="0" fill="#333333"></rect></g></g><g></g><g><g><text text-anchor="middle" x="120.5" y="272.3833333333333" font-family="Arial" font-size="13" stroke="none" stroke-width="0" fill="#444444">0</text></g><g><text text-anchor="middle" x="213.6667" y="272.3833333333333" font-family="Arial" font-size="13" stroke="none" stroke-width="0" fill="#444444">250</text></g><g><text text-anchor="middle" x="306.8333" y="272.3833333333333" font-family="Arial" font-size="13" stroke="none" stroke-width="0" fill="#444444">500</text></g><g><text text-anchor="middle" x="400" y="272.3833333333333" font-family="Arial" font-size="13" stroke="none" stroke-width="0" fill="#444444">750</text></g><g><text text-anchor="middle" x="493.1667" y="272.3833333333333" font-family="Arial" font-size="13" stroke="none" stroke-width="0" fill="#444444">1,000</text></g><g><text text-anchor="middle" x="586.3333" y="272.3833333333333" font-family="Arial" font-size="13" stroke="none" stroke-width="0" fill="#444444">1,250</text></g><g><text text-anchor="middle" x="679.5" y="272.3833333333333" font-family="Arial" font-size="13" stroke="none" stroke-width="0" fill="#444444">1,500</text></g><g><text text-anchor="end" x="107" y="70.95" font-family="Arial" font-size="13" stroke="none" stroke-width="0" fill="#222222">ostringstream</text></g><g><text text-anchor="end" x="107" y="112.74999999999999" font-family="Arial" font-size="13" stroke="none" stroke-width="0" fill="#222222">ostrstream</text></g><g><text text-anchor="end" x="107" y="154.55" font-family="Arial" font-size="13" stroke="none" stroke-width="0" fill="#222222">sprintf</text></g><g><text text-anchor="end" x="107" y="196.35" font-family="Arial" font-size="13" stroke="none" stroke-width="0" fill="#222222">doubleconv</text></g><g><text text-anchor="end" x="107" y="238.15" font-family="Arial" font-size="13" stroke="none" stroke-width="0" fill="#222222">fmt</text></g></g></g><g><g><text text-anchor="middle" x="300" y="291.71666666666664" font-family="Arial" font-size="13" font-style="italic" stroke="none" stroke-width="0" fill="#222222">Time (ns), smaller is better</text><rect x="120" y="280.66666666666663" width="560" height="13" stroke="none" stroke-width="0" fill-opacity="0" fill="#ffffff"></rect></g></g><g></g></svg>
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<img src="perf.svg">
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The library <b>minimizes dynamic memory allocations</b> and can optionally
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The library <b>minimizes dynamic memory allocations</b> and can optionally
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<a href="api#compile-api">compile format strings</a> to optimal code.
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<a href="api#compile-api">compile format strings</a> to optimal code.
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</p>
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</p>
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</div>
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</div>
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@ -69,11 +68,11 @@ The library <b>minimizes dynamic memory allocations</b> and can optionally
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<pre><code class="language-cpp"
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<pre><code class="language-cpp"
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>fmt::print("Слава Україні!");</code></pre>
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>fmt::print("Слава Україні!");</code></pre>
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will be printed correctly on Linux, macOS and even Windows console regardless
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will be printed correctly on Linux, macOS, and even Windows console,
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of the codepages.
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regardless of the codepages.
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</p>
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</p>
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<p>
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<p>
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The default is <b>locale-independent</b> but you can opt into localized
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The default is <b>locale-independent</b>, but you can opt into localized
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formatting and {fmt} makes it work with Unicode, working around problems in
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formatting and {fmt} makes it work with Unicode, working around problems in
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the standard libary.
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the standard libary.
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</p>
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</p>
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@ -89,8 +88,8 @@ The library <b>minimizes dynamic memory allocations</b> and can optionally
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</p>
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</p>
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<p>
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<p>
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Code using {fmt} is usually several times faster to compile than the
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Code using {fmt} is usually several times faster to compile than the
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equivalent iostreams code and while <code>printf</code> compiles faster still,
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equivalent iostreams code, and while <code>printf</code> compiles faster
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the gap is narrowing.
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still, the gap is narrowing.
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</p>
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</p>
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<a href="https://github.com/fmtlib/fmt?tab=readme-ov-file#compile-time-and-code-bloat">
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<a href="https://github.com/fmtlib/fmt?tab=readme-ov-file#compile-time-and-code-bloat">
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→ Learn more</a>
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→ Learn more</a>
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@ -99,34 +98,34 @@ The library <b>minimizes dynamic memory allocations</b> and can optionally
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<div class="feature">
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<div class="feature">
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<h2>Small binary footprint</h2>
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<h2>Small binary footprint</h2>
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<p>
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<p>
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Type erasure is also used to prevent template bloat resulting in <b>compact
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Type erasure is also used to prevent template bloat, resulting in <b>compact
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per-call binary code</b>. For example, a call to <code>fmt::print</code> with
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per-call binary code</b>. For example, a call to <code>fmt::print</code> with
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a single argument is less than <a href="https://godbolt.org/g/TZU4KF">ten
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a single argument is fewer than <a href="https://godbolt.org/g/TZU4KF">ten
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x86-64 instructions</a>, comparable to <code>printf</code> despite adding
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x86-64 instructions</a>, comparable to <code>printf</code> despite adding
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runtime safety and much smaller than the equivalent iostreams code.
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runtime safety and much smaller than the equivalent iostreams code.
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</p>
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</p>
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<p>
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<p>
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The library itself has small binary footprint and some components such as
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The library itself has small binary footprint and some components such as
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floating-point formatting can be disabled to make it even smaller for
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floating-point formatting can be disabled to make it even smaller for
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resource constrained devices.
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resource-constrained devices.
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</p>
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</p>
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</div>
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</div>
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<div class="feature">
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<div class="feature">
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<h2>Portability</h2>
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<h2>Portability</h2>
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<p>
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<p>
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{fmt} has a <b>small self-contained codebase</b> with the core consisting of
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{fmt} has a <b>small self-contained codebase</b> with the core consisting of
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just three header files and no external dependencies.
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just three header files and no external dependencies.
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</p>
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</p>
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<p>
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<p>
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The library is highly portable and requires only on a minimal <b>subset of
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The library is highly portable and requires only a minimal <b>subset of
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C++11</b> features which are available in GCC 4.8, Clang 3.4, MSVC 19.0 (2015)
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C++11</b> features which are available in GCC 4.8, Clang 3.4, MSVC 19.0
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and later. Newer compiler and standard library features are used if available
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(2015) and later. Newer compiler and standard library features are used
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and enable additional functionality.
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if available, and enable additional functionality.
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</p>
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</p>
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<p>
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<p>
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Where possible, the output of formatting functions is <b>consistent across
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Where possible, the output of formatting functions is <b>consistent across
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platforms</b>.
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platforms</b>.
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</p>
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</p>
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</p>
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</p>
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</div>
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</div>
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@ -134,12 +133,13 @@ platforms</b>.
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<div class="feature">
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<div class="feature">
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<h2>Open source</h2>
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<h2>Open source</h2>
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<p>
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<p>
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{fmt} is in top hundred open-source libraries on GitHub and has <b>hundreds of
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{fmt} is in the top hundred open-source C++ libraries on GitHub and has
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all-time contributors</b>.
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<a href="https://github.com/fmtlib/fmt/graphs/contributors">hundreds of
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all-time contributors</a>.
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</p>
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</p>
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<p>
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<p>
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Permissive MIT <a href="https://github.com/fmtlib/fmt#license">license</a>
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The permissive MIT <a href="https://github.com/fmtlib/fmt#license">license</a>
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allows using the library both in open-source and commercial projects.
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allows the use the library in both open-source and commercial projects.
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</p>
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</p>
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</div>
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</div>
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1
doc/perf.svg
Normal file
1
doc/perf.svg
Normal file
@ -0,0 +1 @@
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<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="20 0 550 300" aria-label="A chart." style="overflow: hidden;"><defs id="_ABSTRACT_RENDERER_ID_0"><clipPath id="_ABSTRACT_RENDERER_ID_1"><rect x="120" y="45" width="560" height="210"></rect></clipPath></defs><rect x="0" y="0" width="800" height="300" stroke="none" stroke-width="0" fill="#ffffff"></rect><g><text text-anchor="start" x="120" y="27.05" font-family="Arial" font-size="13" font-weight="bold" stroke="none" stroke-width="0" fill="#000000">double to string</text><rect x="120" y="16" width="560" height="13" stroke="none" stroke-width="0" fill-opacity="0" fill="#ffffff"></rect></g><g><rect x="120" y="45" width="560" height="210" stroke="none" stroke-width="0" fill-opacity="0" fill="#ffffff"></rect><g clip-path="url(#_ABSTRACT_RENDERER_ID_1)"><g><rect x="120" y="45" width="1" height="210" stroke="none" stroke-width="0" fill="#cccccc"></rect><rect x="213" y="45" width="1" height="210" stroke="none" stroke-width="0" fill="#cccccc"></rect><rect x="306" y="45" width="1" height="210" stroke="none" stroke-width="0" fill="#cccccc"></rect><rect x="400" y="45" width="1" height="210" stroke="none" stroke-width="0" fill="#cccccc"></rect><rect x="493" y="45" width="1" height="210" stroke="none" stroke-width="0" fill="#cccccc"></rect><rect x="586" y="45" width="1" height="210" stroke="none" stroke-width="0" fill="#cccccc"></rect><rect x="679" y="45" width="1" height="210" stroke="none" stroke-width="0" fill="#cccccc"></rect></g><g><rect x="121" y="53" width="450" height="26" stroke="#ff9900" stroke-width="1" fill="#ff9900"></rect><rect x="121" y="95" width="421" height="26" stroke="#109618" stroke-width="1" fill="#109618"></rect><rect x="121" y="137" width="341" height="26" stroke="#990099" stroke-width="1" fill="#990099"></rect><rect x="121" y="179" width="31" height="26" stroke="#3366cc" stroke-width="1" fill="#3366cc"></rect><rect x="121" y="221" width="15" height="26" stroke="#dc3912" stroke-width="1" fill="#dc3912"></rect></g><g><rect x="120" y="45" width="1" height="210" stroke="none" stroke-width="0" fill="#333333"></rect></g></g><g></g><g><g><text text-anchor="middle" x="120.5" y="272.3833333333333" font-family="Arial" font-size="13" stroke="none" stroke-width="0" fill="#444444">0</text></g><g><text text-anchor="middle" x="213.6667" y="272.3833333333333" font-family="Arial" font-size="13" stroke="none" stroke-width="0" fill="#444444">250</text></g><g><text text-anchor="middle" x="306.8333" y="272.3833333333333" font-family="Arial" font-size="13" stroke="none" stroke-width="0" fill="#444444">500</text></g><g><text text-anchor="middle" x="400" y="272.3833333333333" font-family="Arial" font-size="13" stroke="none" stroke-width="0" fill="#444444">750</text></g><g><text text-anchor="middle" x="493.1667" y="272.3833333333333" font-family="Arial" font-size="13" stroke="none" stroke-width="0" fill="#444444">1,000</text></g><g><text text-anchor="middle" x="586.3333" y="272.3833333333333" font-family="Arial" font-size="13" stroke="none" stroke-width="0" fill="#444444">1,250</text></g><g><text text-anchor="middle" x="679.5" y="272.3833333333333" font-family="Arial" font-size="13" stroke="none" stroke-width="0" fill="#444444">1,500</text></g><g><text text-anchor="end" x="107" y="70.95" font-family="Arial" font-size="13" stroke="none" stroke-width="0" fill="#222222">ostringstream</text></g><g><text text-anchor="end" x="107" y="112.74999999999999" font-family="Arial" font-size="13" stroke="none" stroke-width="0" fill="#222222">ostrstream</text></g><g><text text-anchor="end" x="107" y="154.55" font-family="Arial" font-size="13" stroke="none" stroke-width="0" fill="#222222">sprintf</text></g><g><text text-anchor="end" x="107" y="196.35" font-family="Arial" font-size="13" stroke="none" stroke-width="0" fill="#222222">doubleconv</text></g><g><text text-anchor="end" x="107" y="238.15" font-family="Arial" font-size="13" stroke="none" stroke-width="0" fill="#222222">fmt</text></g></g></g><g><g><text text-anchor="middle" x="300" y="291.71666666666664" font-family="Arial" font-size="13" font-style="italic" stroke="none" stroke-width="0" fill="#222222">Time (ns), smaller is better</text><rect x="120" y="280.66666666666663" width="560" height="13" stroke="none" stroke-width="0" fill-opacity="0" fill="#ffffff"></rect></g></g><g></g></svg>
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After Width: | Height: | Size: 4.3 KiB |
@ -30,9 +30,9 @@ markdown_extensions:
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- pymdownx.snippets
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- pymdownx.snippets
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plugins:
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plugins:
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- search
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- mkdocstrings:
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- mkdocstrings:
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default_handler: cxx
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default_handler: cxx
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nav:
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nav:
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- Home: index.md
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- Home: index.md
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- Usage: usage.md
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- Usage: usage.md
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