Left-pad as a service

Re:Left-pad as a service by jameshart on Thursday March 24, 2016 @09:11AM (#11352427)

Best practice for performance for large left-pad jobs is to call the service recursively using mapreduce. Remember that left-pad(str,pad,n) is equal to left-pad(left-pad(str,pad,n/2),left-pad("",pad,n/2),n). This should run in logarithmic time and is highly parallelizable.

If you don't like the "" magic string in there you could replace it with a call to left-pad(null, null,0).

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Re:Left-pad as a service by paulclinger on Thursday March 24, 2016 @01:48PM (#11354817)

You should be using emptystring.io instead of the "magic string" or a "null, null" hack.

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Re:Left-pad as a service by rkuykendall-com on Thursday March 24, 2016 @02:45PM (#11355279)

Here you go: https://api.left-pad.io/?len=0

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Re:Left-pad as a service by capitalsigma on Thursday March 24, 2016 @11:22AM (#11353491)

oh god it's too real

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Re:Left-pad as a service by lucastx on Thursday March 24, 2016 @10:14PM (#11358074)

Poe's law for programming culture extremists

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Re:Left-pad as a service by pajop on Monday March 28, 2016 @11:58PM (#11379390)

if you put https://api.left-pad.io/?len=1017 or anything higher than 1016 it says:

{"errorMessage":"len exceeds 1007 characters. Contact a left-pad.io sales engineer for an enterprise license","errorType":"Error","stackTrace":["exports.handler (/var/task/index.js:33:22)"]}

wow. they even have an enterprise sales engineer! :)

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Re:Left-pad as a service by kdma on Thursday March 24, 2016 @05:59PM (#11356823)

Shouldn't it be leftpad(leftpad (str,pad,n/2),leftpad("",pad,n/2),1)?

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