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Media Queries: How to target desktop, tablet, and mobile?
I have been doing some research on media queries and I still don't quite understand how to target devices of certain sizes.
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What is causing ERROR: there is no unique constraint matching given keys for referenced table?
Below example table structure gives an ERROR: there is no unique constraint matching given keys for referenced table, and having stared at it for while now I can't figure out why this error arises in this situation.
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How to hide command output in Bash
I want to make my Bash scripts more elegant for the end user. How do I hide the output when Bash is executing commands?
7 A...
What is the difference between a definition and a declaration?
The meaning of both eludes me.
23 Answers
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nginx: [emerg] could not build the server_names_hash, you should increase server_names_hash_bucket_s
I'm in the process of setting up a new server. The http-Server of my choice is NGINX. I want to add the domain audi-freunde-einbeck.de as a virtual host. I already have 2 other domains in there and it works fine, but when I try to add the above mentioned domain and start the server it gives me Jo...
How to manage local vs production settings in Django?
...vironment variable, of course, but that can be left to your deployment mechanism, no?
– JL Peyret
Sep 24 '15 at 22:52
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setNeedsLayout vs. setNeedsUpdateConstraints and layoutIfNeeded vs updateConstraintsIfNeeded
...etty much are asking for a new layout.
The rules of thumb are:
If you manipulated constraints directly, call setNeedsLayout.
If you changed some conditions (like offsets or smth) which would change constraints in your overridden updateConstraints method (a recommended way to change constraints, ...
How do I create a constant in Python?
...recently found a very succinct update to this which automatically raises meaningful error messages and prevents access via __dict__:
class CONST(object):
__slots__ = ()
FOO = 1234
CONST = CONST()
# ----------
print(CONST.FOO) # 1234
CONST.FOO = 4321 # AttributeError: 'CO...
MIME type warning in chrome for png images
Just ran my site in chrome and suprisingly it comes up with this warning for each of my .png images:
6 Answers
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How do I edit an existing tag message in git?
We have several annotated tags in our git repository. The older tags have bogus messages that we would like to update to be in our new style.
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