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What is the advantage of GCC's __builtin_expect in if else statements?
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Let's decompile to see what GCC 4.8 does with it
Blagovest mentioned branch inversion to improve the pipeline, but do current compilers really do it? Let's find out!
Without __builtin_expect
#include "stdio.h"
#include "time.h"
int main() {
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Is the creation of Java class files deterministic?
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@GaborSch what is it missing? "What are the circumstances where the same javac executable,when run on a different platform, will produce different bytecode?" basically depending on the whim of the group that produced the compiler
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What's the longest possible worldwide phone number I should consider in SQL varchar(length) for phon
What's the longest possible worldwide phone number I should consider in SQL varchar(length) for phone.
5 Answers
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What is pip's equivalent of `npm install package --save-dev`?
...ependency management tool that wraps pip and, among other things, provides what you're asking:
https://pipenv.kennethreitz.org/en/latest/#example-pipenv-workflow
$ pipenv install <package>
This will create a Pipfile if one doesn’t exist. If one does exist, it will automatically be edited wi...
What exactly is Apache Camel?
I don't understand what exactly Camel does.
23 Answers
23
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Converting bytes to megabytes
...al meaning (multiplier 1024). In general you shouldn't make assumptions on what people mean. For example, 128 kBit/s for MP3s usually means 128000 bits because the multiplier 1000 is mostly used with the unit bits. But often people then call 2048 kBit/s equal to 2 MBit/s - confusing eh?
So as a gen...
What is the coolest thing you can do in
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When I first wrote this.
10 PRINT "What is your name?"
20 INPUT A$
30 PRINT "Hello " A$
40 GOTO 30
It blew people away! The computer remembered their name!
EDIT: Just to add to this. If you can convince a new programmer this is the coolest thing they can do...
jQuery UI Tabs - How to Get Currently Selected Tab Index
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For JQuery UI versions before 1.9: ui.index from the event is what you want.
For JQuery UI 1.9 or later: see the answer by Giorgio Luparia, below.
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How to use Namespaces in Swift?
...dule, so even when you say "NSLog" (yes, it still exists)
you're getting what Swift thinks of as "Foundation.NSLog".
Also Chris Lattner tweeted about namespacing.
Namespacing is implicit in Swift, all classes (etc) are implicitly
scoped by the module (Xcode target) they are in. no class pr...
403 Forbidden vs 401 Unauthorized HTTP responses
...ileges (they are not logged in or do not belong to the proper user group), what is the proper HTTP response to serve?
17 An...