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Explain ExtJS 4 event handling
...e equivalent) were created. So, for example, if we have html:
<div id="test_node"></div>
and we want add click event handler.
Let's retrieve Element:
var el = Ext.get('test_node');
Now let's check docs for click event. It's handler may have three parameters:
click( Ext.EventObj...
How to get root access on Android emulator?
...s for getting root in Android emulator. I don't use any Android device and test everything on emulator(AVD).
10 Answers
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How to check whether an array is empty using PHP?
...t; [UserValue02]
ARRAY THREE:
[0] => []
[1] => []
And testing the above arrays with empty() returns the following results:
ARRAY ONE:
$ArrayOne is not empty
ARRAY TWO:
$ArrayTwo is not empty
ARRAY THREE:
$ArrayThree is not empty
An array will always be ...
Plotting two variables as lines using ggplot2 on the same graph
...all number of variables, you can build the plot manually yourself:
ggplot(test_data, aes(date)) +
geom_line(aes(y = var0, colour = "var0")) +
geom_line(aes(y = var1, colour = "var1"))
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facebook: permanent Page Access Token?
...he access_token field should have your permanent access token. Copy it and test it in the Access Token Debugger. Under "Expires" it should say "Never".
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For files in directory, only echo filename (no path)
... basename won't work correctly for files with space. Example: pwd output: /test 1, basename $(pwd) output: test. Tested on OS X and Ubuntu Server (14.04). Native bash solution, as @SiegeX recommended, is what worked for me.
– Marko Grešak
Nov 9 '14 at 0:56
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How to check whether an object is a date?
...t this is a better method:
Object.prototype.is = function() {
var test = arguments.length ? [].slice.call(arguments) : null
,self = this.constructor;
return test ? !!(test.filter(function(a){return a === self}).length)
: (this.constructor.name ||
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Count all occurrences of a string in lots of files with grep
...one shows the relevant files and then the total count of matches: grep -rc test . | awk -F: '$NF > 0 {x+=$NF; $NF=""; print} END{print "Total:",x}'
– Yaron
Sep 6 '17 at 11:40
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How do you make a HTTP request with C++?
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latest version seems to be broken under mac.. something is messed up with config.h when linked as library.
– eugene
Apr 8 '11 at 0:59
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How can I negate the return-value of a process?
...at you don't have Bash as your shell (for ex.: git scripts, or puppet exec tests) you can run:
echo '! ls notexisting' | bash
-> retcode: 0
echo '! ls /' | bash
-> retcode: 1
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