Euler's constant 0.5772...: Difference between revisions
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</pre>
=={{header|Ruby}}==
<lang ruby>n = 1e6
p (1..n).sum{ 1.0/_1 } - Math.log(n)</lang>
{{out}}
<pre>0.5772161649014507 #12 digits accurate
</pre>
=={{header|Wren}}==
{{trans|C}}
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