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Java: Why is the Date constructor deprecated, and what do I use instead?
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answered Apr 15 '11 at 13:27
RubenRuben
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How can I list ALL DNS records?
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answered Oct 11 '13 at 18:30
denis phillipsdenis phillips
11.7k55 gold badges3030 silver badges4747 bronze badges
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Fastest way to check if a string is JSON in PHP?
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30 Answers
30
Active
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Validate decimal numbers in JavaScript - IsNumeric()
...uldn't be considered as "numeric").
I think is worth sharing this set of +30 unit tests made to numerous function implementations, and also share the one that passes all my tests:
function isNumeric(n) {
return !isNaN(parseFloat(n)) && isFinite(n);
}
P.S. isNaN & isFinite have a ...
Rails: Adding an index after adding column
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239
You can run another migration, just for the index:
class AddIndexToTable < ActiveRecord::Mi...
Is a Java string really immutable?
...ing. The compiler does this (as mentioned by other answers).
The reason s3 does not was actually a bit surprising to me, as I thought it would share the value array (it did in earlier version of Java, before Java 7u6). However, looking at the source code of String, we can see that the value charac...
In .NET, which loop runs faster, 'for' or 'foreach'?
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365
Patrick Smacchia blogged about this last month, with the following conclusions:
for loo...
Are there any open source C libraries with common data structures? [closed]
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BSD tree.h has:
RB - red-black tree
SPLAY - splay tree
See the queue(3) and tree(3) man pages for details. I really like them because they are pure C macros without dependencies (not even libc). Plus with the BSD license you don't have to worry about any company restrictions w/ GPL.
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How to calculate time in hours between two dates in iOS
...weenDates = [date1 timeIntervalSinceDate:date2];
double secondsInAnHour = 3600;
NSInteger hoursBetweenDates = distanceBetweenDates / secondsInAnHour;
See, the apple reference library http://developer.apple.com/library/mac/navigation/
or if you are using Xcode just select help/documentation from ...
Declare a constant array
...it constant.
The nearest you can get is:
var letter_goodness = [...]float32 {.0817, .0149, .0278, .0425, .1270, .0223, .0202, .0609, .0697, .0015, .0077, .0402, .0241, .0675, .0751, .0193, .0009, .0599, .0633, .0906, .0276, .0098, .0236, .0015, .0197, .0007 }
Note the [...] instead of []: it ens...