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How do you use window.postMessage across domains?
...t have to be the same domains, but B must know exactly what domain is used by A.
– Greg Bogumil
Apr 8 '15 at 14:31
7
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How do I get cURL to not show the progress bar?
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by the way, see below link about 2>/dev/null if you don't know: stackoverflow.com/questions/10508843/what-is-dev-null-21
– kenju
Aug 23 '15 at 4:24
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Bash: If/Else statement in one line
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&& means "and if successful"; by placing your if statement on the right-hand side of it, you ensure that it will only run if grep returns 0. To fix it, use ; instead:
ps aux | grep some_proces[s] > /tmp/test.txt ; if [ $? -eq 0 ]; then echo 1; else...
@Scope(“prototype”) bean scope not creating new bean
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As mentioned by nicholas.hauschild injecting Spring context is not a good idea. In your case, @Scope("request") is enough to fix it. But let say you need several instances of LoginAction in controller method. In this case, I would recomme...
Python None comparison: should I use “is” or ==?
...ns like None because it is faster and more predictable. is always compares by object identity, whereas what == will do depends on the exact type of the operands and even on their ordering.
This recommendation is supported by PEP 8, which explicitly states that "comparisons to singletons like None s...
How to solve error “Missing `secret_key_base` for 'production' environment” (Rails 4.1)
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I had the same problem and solved it by creating an environment variable to be loaded every time I logged in to the production server, and made a mini-guide of the steps to configure it:
I was using Rails 4.1 with Unicorn v4.8.2 and when I tried to deploy my ap...
How can I change an element's text without changing its child elements?
...p>
</div>
You could do this:
var your_div = document.getElementById('your_div');
var text_to_change = your_div.childNodes[0];
text_to_change.nodeValue = 'new text';
Of course, you can still use jQuery to select the <div> in the first place (i.e. var your_div = $('your_div').get...
How to check if AlarmManager already has an alarm set?
...ated via getBroadcast with an equivalent target intent. You can prove this by running the alarmUp code after the getBroadcast all, but before all the calendar and alarm manager stuff. It will return true. This fact explains why you have to PendingIntent.cancel to get the value to go back to false. S...
How can I make git do the “did you mean” suggestion?
...e a straightforward script that just chooses the first suggestion provided by git. You run the script after the failed command and use the built in bash history substitution "bang bang" syntax. Also, if you are typing something that could possibly have more than one command, this command lets you ch...
Auto-center map with multiple markers in Google Maps API v3
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There's an easier way, by extending an empty LatLngBounds rather than creating one explicitly from two points. (See this question for more details)
Should look something like this, added to your code:
//create empty LatLngBounds object
var bounds...