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How can I check if a URL exists via PHP?
...t Found') {
$exists = false;
}
else {
$exists = true;
}
From here and right below the above post, there's a curl solution:
function url_exists($url) {
return curl_init($url) !== false;
}
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...
Is there a “not equal” operator in Python?
...son operators. For comparing object identities, you can use the keyword is and its negation is not.
e.g.
1 == 1 # -> True
1 != 1 # -> False
[] is [] #-> False (distinct objects)
a = b = []; a is b # -> True (same object)
...
Does List guarantee insertion order?
...ly the List could re-order the collection any time after an item was added and that statement would still be valid. I don't want to get nit-picky about it, but if a manager or QA really made me defend this position, I wouldn't feel very confident with just that quote.
– tehDorf...
CustomErrors mode=“Off”
...
This has been driving me insane for the past few days and couldn't get around it but have finally figured it out:
In my machine.config file I had an entry under <system.web>:
<deployment retail="true" />
This seems to override any other customError settings that ...
Search All Fields In All Tables For A Specific Value (Oracle)
...an you not start with whatever client application is displaying this value and try to figure out what query it is using to obtain it?
Anyway, diciu's answer gives one method of generating SQL queries to check every column of every table for the value. You can also do similar stuff entirely in one ...
Most pythonic way to delete a file which may not exist
...e(filename)
except OSError:
pass
Although this takes even more lines and looks very ugly, it avoids the unnecessary call to os.path.exists() and follows the python convention of overusing exceptions.
It may be worthwhile to write a function to do this for you:
import os, errno
def silentrem...
iOS: UIButton resize according to text length
In interface builder, holding Command + = will resize a button to fit its text. I was wondering if this was possible to do programmatically before the button was added to the view.
...
How to get element by class name? [duplicate]
...rrFromList = [].slice.call(y);
As yckart suggested querySelector('.foo') and querySelectorAll('.foo') would be preferable, though, as they are, indeed, better supported (93.99% vs 87.24%), according to caniuse.com:
querySelector(all)
getElementsByClassName
Don't use w3schools to learn something
...
Set angular scope variable in markup
...ble value.
I found this very useful when iterating multiple nested arrays and I wanted to keep my current iteration info in one variable instead of querying it multiple times.
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Best general SVN Ignore Pattern?
...to this question:
I use the following SVN ignore pattern with TortoiseSVN and Subversion CLI for native C++, C#/VB.NET, and PERL projects on both Windows and Linux platforms. It works well for me!
Formatted for copy and paste:
*.o *.lo *.la #*# .*.rej *.rej .*~ *~ .#* .DS_Store thumbs.db Thum...