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How to have the cp command create any necessary folders for copying a file to a destination [duplica
...Quote your parameter expansions, please. Or you'll suffer bugs introduced by wordsplitting and pathname expansion. Put "" around all your $foo's.
– lhunath
Jun 4 '09 at 5:50
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UIBarButtonItem with custom image and no border
...e, if you wish to present a UIPopoverController from the bar button item. By subclassing UIBarButtonItem, you can add an ivar that retains the original target, allowing our subclass instances to intercept, modify, and forward the action message with the proper sender.
So, CCFBarButtonItem.h:
#imp...
JavaScript equivalent of PHP’s die
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This is tested with firefox and chrome. I don't know how this is handled by IE or Safari
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Pandas: Setting no. of max rows
...ns inside of a block of code. Pass in the option name as a string followed by the value you want it to be. You may pass in any number of options in the same line:
with pd.option_context('display.max_rows', 100, 'display.max_columns', 10):
some pandas stuff
You can also reset an option back to...
$_POST vs. $_SERVER['REQUEST_METHOD'] == 'POST'
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You can submit a form by hitting the enter key (i.e. without clicking the submit button) in most browsers but this does not necessarily send submit as a variable - so it is possible to submit an empty form i.e. $_POST will be empty but the form w...
Add a default value to a column through a migration
...have a strange behaviour. In yours example it's irreversible. edgeguides.rubyonrails.org/active_record_migrations.html recommend to use it this way: change_column_default :products, :approved, from: true, to: false — but it doesn't works too.
– Ilya Krigouzov
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Java synchronized static methods: lock on object or class
...ociated with the class. Thus access to class's static fields is controlled by a lock that's distinct from the lock for any instance of the class.
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How do I get the base URL with PHP?
...r is on some other page than home, he/she should be redirected to homepage by clicking on header image. How can I do that?
– Joey
Dec 14 '17 at 8:04
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Can't connect to local MySQL server through socket '/tmp/mysql.sock
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The relevant section of the MySQL manual is here. I'd start by going through the debugging steps listed there.
Also, remember that localhost and 127.0.0.1 are not the same thing in this context:
If host is set to localhost, then a socket or pipe is used.
If host is set to 127.0.0.1...
How to center canvas in html5
...allows the browser to stretch and squeeze the picture. I solve the problem by having the text line just before the image_tag line centred (also getting rid of float: left;). I would have liked the text to be left aligned, but this is a minor inconvienence, that I can tolerate.
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