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Most efficient way to prepend a value to an array
...-O but certainly using the unshift method is more concise:
var a = [1, 2, 3, 4];
a.unshift(0);
a; // => [0, 1, 2, 3, 4]
[Edit]
This jsPerf benchmark shows that unshift is decently faster in at least a couple of browsers, regardless of possibly different big-O performance if you are ok with mo...
Types in MySQL: BigInt(20) vs Int(20)
...values than can be stored in their respective number of bytes. That means 232 values in an INT and 264 values in a BIGINT.
The 20 in INT(20) and BIGINT(20) means almost nothing. It's a hint for display width. It has nothing to do with storage, nor the range of values that column will accept.
Pr...
“FOUNDATION_EXPORT” vs “extern”
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173
If you look in NSObjCRuntime.h (in Foundation) you will see that FOUNDATION_EXPORT compiles to e...
iOS: Use a boolean in NSUserDefaults
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263
You can set your boolean by using:
[[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"...
Android JSONObject - How can I loop through a flat JSON object to get each key and value
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314
Use the keys() iterator to iterate over all the properties, and call get() for each.
Iterator...
How do I extract a sub-hash from a hash?
...azlerGazler
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Javascript split regex question
...andersluisDaniel Vandersluis
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PostgreSQL Connection URL
...me document
postgresql://
postgresql://localhost
postgresql://localhost:5432
postgresql://localhost/mydb
postgresql://user@localhost
postgresql://user:secret@localhost
postgresql://other@localhost/otherdb?connect_timeout=10&application_name=myapp
postgresql://localhost/mydb?user=other&passw...
How to create byte array from HttpPostedFile
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Robert MacLean
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answered Dec 11 '08 at 16:32
WolfwyrdWolf...
How can I import one Gradle script into another?
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