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What is the correct XPath for choosing attributes that contain “foo”?
Given this XML, what XPath returns all elements whose prop attribute contains Foo (the first three nodes):
9 Answers
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Implement Stack using Two Queues
...d queue2
Version B (efficient pop):
push:
enqueue in queue2
enqueue all items of queue1 in queue2, then switch the names of queue1 and queue2
pop:
deqeue from queue1
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Filter by process/PID in Wireshark
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I don't see how. The PID doesn't make it onto the wire (generally speaking), plus Wireshark allows you to look at what's on the wire - potentially all machines which are communicating over the wire. Process IDs aren't unique across different machines, anyway.
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Rails create or update magic?
I have a class called CachedObject that stores generic serialised objects indexed by key. I want this class to implement a create_or_update method. If an object is found it will update it, otherwise it will create a new one.
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How can you program if you're blind?
...d. Most programmers would spend hours looking at a computer monitor (especially during times when they are in the zone ), but I know there are blind programmers (such as T.V. Raman who currently works for Google).
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What are the aspect ratios for all Android phone and tablet devices?
I'm looking for a list of all screen aspect ratios for popular Android based Phones and Tablets.
5 Answers
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Cannot set content-type to 'application/json' in jQuery.ajax
...S header is used to find out if the request from the originating domain is allowed. Using fiddler, I added the following to the response headers from my server.
Access-Control-Allow-Origin: *
Access-Control-Allow-Headers: Content-Type
Access-Control-Allow-Methods: POST, GET, OPTIONS
Once the b...
Automatically deleting related rows in Laravel (Eloquent ORM)
...();
static::deleting(function($user) { // before delete() method call this
$user->photos()->delete();
// do the rest of the cleanup...
});
}
}
You should probably also put the whole thing inside a transaction, to ensure the referential integrity...
Explain the “setUp” and “tearDown” Python methods used in test cases
...nd tearDown methods while writing test cases apart from that setUp is called immediately before calling the test method and tearDown is called immediately after it has been called?
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Delete files or folder recursively on Windows CMD
... /q *.svn
/q disables Yes/No prompting
/s means delete the file(s) from all subdirectories.
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