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How to append one file to another in Linux from the shell?
... append the contents of file2 to file1 so that contents of file1 persist the process?
8 Answers
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When should one use a 'www' subdomain?
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There are a ton of good reasons to include it, the best of which is here:
Yahoo Performance Best Practices
Due to the dot rule with cookies, if you don't have the 'www.' then you can't set two-dot cookies or cross-subdomain cookies a la *.example.com. There are two pertinent impacts.
F...
Good way of getting the user's location in Android
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Looks like we're coding the same application ;-)
Here is my current implementation. I'm still in the beta testing phase of my GPS uploader app, so there might be many possible improvements. but it seems to work pretty well so far.
/**
* try to get the 'best' location selected ...
Position of least significant bit that is set
... efficient way to determine the position of the least significant bit that is set in an integer, e.g. for 0x0FF0 it would be 4.
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Android Archive Library (aar) vs standard jar
... your app.
AARs vs Jars:
The main difference between a Jar and a AAR is that AARs include
resources such as layouts, drawables etc. This makes it a lot easier
to create self-contained visual components. For example if you have
multiple apps that use the same login screen, with Jars you c...
How to handle screen orientation change when progress dialog and background thread active?
...ckground thread. Before starting, it pops up a progress dialog. The dialog is dismissed on the handler. This all works fine, except when screen orientation changes while the dialog is up (and the background thread is going). At this point the app either crashes, or deadlocks, or gets into a weird st...
Ajax request returns 200 OK, but an error event is fired instead of success
...e header sent by the server. If the conversion fails (e.g. if the JSON/XML is invalid), the error callback is fired.
Your AJAX code contains:
dataType: "json"
In this case jQuery:
Evaluates the response as JSON and returns a JavaScript object. […]
The JSON data is parsed in a strict ma...
What does $$ mean in the shell?
...name in a shell for temp files was to use a double dollar sign ( $$ ). This does produce a number that varies from time to time... but if you call it repeatedly, it returns the same number. (The solution is to just use the time.)
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Dependency Inject (DI) “friendly” library
...probably be classes intended for consumers to use directly on a regular basis, and "support classes" that are dependencies of those more common "end user" classes.
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What is your favorite C programming trick? [closed]
For example, I recently came across this in the linux kernel:
37 Answers
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