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Correct way to convert size in bytes to KB, MB, GB in JavaScript
...toLowerCase() == 'si') {
// SI units use the Metric representation based on 10^3 as a order of magnitude
var orderOfMagnitude = Math.pow(10, 3);
var abbreviations = ['Bytes', 'kB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
} else {
// IEC units use 2^10 as an ord...
Evaluating a mathematical expression in a string
...might be possible to break out using introspection:
eval('(1).__class__.__bases__[0].__subclasses__()', {'__builtins__': None})
Evaluate arithmetic expression using ast
import ast
import operator as op
# supported operators
operators = {ast.Add: op.add, ast.Sub: op.sub, ast.Mult: op.mul,
...
Detecting endianness programmatically in a C++ program
...
I don't like the method based on type punning - it will often be warned against by compiler. That's exactly what unions are for !
bool is_big_endian(void)
{
union {
uint32_t i;
char c[4];
} bint = {0x01020304};
return b...
Groovy / grails how to determine a data type?
...
instanceof is great for filtering based on interface.
– cdeszaq
Mar 12 '13 at 13:15
...
Is there a way to make mv create the directory to be moved to if it doesn't exist?
...
[ -a "$dir" ] ||
mkdir -p "$dir" &&
mv "$@"
}
These based on the submission of Chris Lutz.
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CSS: fixed position on x-axis but not y?
...v class="position-fixed-y red-box">
</div>
The pattern of base pairs in the DNA double helix encodes the instructions for building the proteins necessary to construct an entire organism. DNA, or deoxyribonucleic acid, is found within most cells of an organism, and most organisms hav...
CSS: transition opacity on mouse-out?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How do you keep parents of floated elements from collapsing? [duplicate]
...Solution 1:
The most reliable and unobtrusive method appears to be this:
Demo: http://jsfiddle.net/SO_AMK/wXaEH/
HTML:
<div class="clearfix">
<div style="float: left;">Div 1</div>
<div style="float: left;">Div 2</div>
</div>
CSS:
.clearfix::aft...
How to get device make and model on iOS?
...de objectForKey:code];
if (!deviceName) {
// Not found on database. At least guess main device type from string contents:
if ([code rangeOfString:@"iPod"].location != NSNotFound) {
deviceName = @"iPod Touch";
}
else if([code rangeOfString:@"iPad"].lo...
Regular expression to get a string between two strings in Javascript
...it via regextester.com, you will get that hint. It seems that the site has based its rules from the older specification. Lookbehind is now supported. See stackoverflow.com/questions/30118815/… And the pattern works well with modern browsers without error. Try this checker instead regex101.com
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