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How can I check if a Perl array contains a particular value?
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190
Simply turn the array into a hash:
my %params = map { $_ => 1 } @badparams;
if(exists($para...
String.replaceAll without RegEx
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190
Just use String.replace(CharSequence,CharSequence) rather than replaceAll.
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Meaning of “[: too many arguments” error from if [] (square brackets)
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VARIABLE=$(/some/command);
# returns "hello world"
if [ $VARIABLE == 0 ]; then
# fails as if you wrote:
# if [ hello world == 0 ]
fi
The same will be true for any function call that puts down a string containing spaces or other special characters.
Easy fix
Wrap the variable output i...
How to install Google Play Services in a Genymotion VM (with no drag and drop support)?
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As of Genymotion 2.10.0 and onwards, GApps can be installed from the emulator toolbar.
Please refer to answer by @MichaelStoddart.
Next follows former answer kept here for historic reason:
Genymotion doesn't provide Google Apps. To install Goo...
How do you create nested dict in Python?
...ers
f.next()
# get first colum as keys
keys = (line.split(',')[0] for line in f)
# create empty dictionary:
d = {}
# read from file b.csv
with open(b_file) as f:
# gather headers except first key header
headers = f.next().split(',')[1:]
# iterate lines
for line in f:
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Convert Object to JSON string
...t is to be converted to JSON string
I got a link http://www.devcurry.com/2010/03/convert-javascript-object-to-json.html
but it need to have json2.js do jQuery has a native method to do this?
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Using Position Relative/Absolute within a TD?
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190
This is because according to CSS 2.1, the effect of position: relative on table elements is unde...
How to do a batch insert in MySQL
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304
From the MySQL manual
INSERT statements that use VALUES
syntax can insert multiple rows. ...
How to take screenshot of a div with JavaScript?
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10 Answers
10
Active
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CSS: How to have position:absolute div inside a position:relative div not be cropped by an overflow:
...#box2 { position: absolute }
#box3 { position: absolute; top: 10px }
/* Styling */
#box1 { background: #efe; padding: 5px; width: 125px }
#box2 { background: #fee; padding: 2px; width: 100px; height: 100px }
#box3 { background: #eef; paddi...