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Are GUID collisions possible?
I'm working on a database in SQL Server 2000 that uses a GUID for each user that uses the app it's tied to. Somehow, two users ended up with the same GUID. I know that microsoft uses an algorithm to generate a random GUID that has an extremely low chance of causing collisons, but is a collision stil...
What is the fastest or most elegant way to compute a set difference using Javascript arrays?
...if don't know if this is most effective, but perhaps the shortest
A = [1, 2, 3, 4];
B = [1, 3, 4, 7];
diff = A.filter(function(x) { return B.indexOf(x) < 0 })
console.log(diff);
Updated to ES6:
A = [1, 2, 3, 4];
B = [1, 3, 4, 7];
diff = A.filter(x => !B.includes(x) );
console.log(diff)...
How to Sign an Already Compiled Apk
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293
create a key using
keytool -genkey -v -keystore my-release-key.keystore -alias alias_name -k...
How to change plot background color?
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242
Use the set_facecolor(color) method of the axes object, which you've created one of the follow...
How to draw border around a UILabel?
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265
You can set label's border via its underlying CALayer property:
#import <QuartzCore/Quartz...
Checkout old commit and make it a new commit [duplicate]
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221
git rm -r .
git checkout HEAD~3 .
git commit
After the commit, files in the new HEAD will be...
Setting the selected value on a Django forms.ChoiceField
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answered Mar 20 '09 at 9:04
TomTom
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Regex to match string containing two names in any order
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265
You can do checks using lookarounds:
^(?=.*\bjack\b)(?=.*\bjames\b).*$
Test it.
This appro...
How do CUDA blocks/warps/threads map onto CUDA cores?
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