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How to iterate over values of an Enum having flags?
...riable? Or do I have to use Enum.GetValues to iterate over the entire enum and check which ones are set?
16 Answers
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HTML table headers always visible at top of window when viewing a large table
...tThead (demos available) which is very cool, can work with DataTables too, and can even work inside an overflow: auto container.
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Looping in a spiral
...algorithm that would let him loop through the elements of an NxM matrix (N and M are odd). I came up with a solution, but I wanted to see if my fellow SO'ers could come up with a better solution.
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Set mouse focus and move cursor to end of input using jQuery
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Looks like clearing the value after focusing and then resetting works.
input.focus();
var tmpStr = input.val();
input.val('');
input.val(tmpStr);
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How can I truncate a double to only two decimal places in Java?
...gMode(RoundingMode.DOWN);
s = df.format(d);
Check available RoundingMode and DecimalFormat.
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Installing Ruby Gem in Windows
...ckage management system of your
distribution or third-party tools (rbenv and RVM).
On OS X machines, you can use third-party tools (rbenv and RVM).
On Windows machines, you can use RubyInstaller.
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Java maximum memory on Windows XP
...ate 1400 megabytes for Java SE running on 32-bit Windows XP (Java 1.4, 1.5 and 1.6).
13 Answers
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Evaluating a mathematical expression in a string
...ppend(toks[0])
def pushUMinus(self, strg, loc, toks):
if toks and toks[0] == '-':
self.exprStack.append('unary -')
def __init__(self):
"""
expop :: '^'
multop :: '*' | '/'
addop :: '+' | '-'
integer :: ['+' | '-'] '0'..'9'+
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What's the recommended approach to resetting migration history using Django South?
I've accumulated quite a few migrations using South (0.7) and Django (1.1.2) which are starting to consume quite a bit of time in my unit tests. I would like to reset the baseline and start a fresh set of migrations. I've reviewed the South documentation , done the usual Google/Stackoverflow search...
Install NPM into home directory with distribution nodejs package (Ubuntu)
...s. Here's how I suggest compartmentalizing Nodejs packages:
Install Nodejs and NPM via the chris-lea PPA. Then I set up a package root in my homedir to hold the Node "global" packages:
$ NPM_PACKAGES="$HOME/.npm-packages"
$ mkdir -p "$NPM_PACKAGES"
Set NPM to use this directory for its global pac...