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How to output numbers with leading zeros in JavaScript [duplicate]
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NOTE: Potentially outdated. ECMAScript 2017 includes String.prototype.padStart
You're asking for zero padding? Not really rounding. You'll have to convert it to a string since numbers don't make sense with leading zeros. Something like this...
function pad(num, s...
Is < faster than
Is if( a < 901 ) faster than if( a <= 900 ) .
14 Answers
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Double vs. BigDecimal?
... has a certain precision. Working with doubles of various magnitudes (say d1=1000.0 and d2=0.001) could result in the 0.001 being dropped alltogether when summing as the difference in magnitude is so large. With BigDecimal this would not happen.
The disadvantage of BigDecimal is that it's slower, a...
“Diff” an image using ImageMagick
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My own favorites are these two:
compare image1 image2 -compose src diff.png
compare image1 image2 -compose src diff.pdf
The only difference between the 2 commands above: the first one shows the visual difference between the two images as a PNG file, the second one as...
How to get the parents of a merge commit in git?
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Simple git log <hash> called for a merge commit shows abbreviated hashes of its parents:...
What's the difference between Sender, From and Return-Path?
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174
So, over SMTP when a message is submitted, the SMTP envelope (sender, recipients, etc.) is dif...
How to get the list of files in a directory in a shell script?
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10 Answers
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How to undo 'git reset'?
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Short answer:
git reset 'HEAD@{1}'
Long answer:
Git keeps a log of all ref updates (e.g., checkout, reset, commit, merge). You can view it by typing:
git reflog
Somewhere in this list is the commit that you lost. Let's say you just typed git reset HE...
Positioning MKMapView to show multiple annotations at once
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answered Mar 22 '14 at 1:27
Code CommanderCode Commander
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