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How to implement Enums in Ruby?
...s and the first letter of the module name must be capitalized for ruby to know that the module is a module of constants.
– Rokujolady
Apr 8 '13 at 18:41
3
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How to pause / sleep thread or process in Android?
...
@ToolmakerSteve happy now :D ? Main question is: "How to pause / sleep thread or process in Android?" so my answer was simple :). If someone google for "how to sleep thread" this question will show. He/She is probably looking for my answer :P. But...
How can Xcode 6 adaptive UIs be backwards-compatible with iOS 7 and iOS 6?
...lasses that have a Compact Height. This has been confirmed by Apple and is now stated directly in the documentation:
For apps supporting versions of iOS earlier than iOS 8, most size classes are backward compatible.
Size classes are backward compatible when:
- The app is built using Xcode version 6...
Cannot pass null argument when using type hinting
...roblem I have with this is that it changes the definition of the function. Now the parameter is optional - which isn't really what the author intended (although, if he is passing it null, it is implicitly optional).
– crush
Jan 29 '13 at 13:35
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How do I connect to a MySQL Database in Python?
... documentation. A good starting point.
3 - More advanced usage
Once you know how it works, You may want to use an ORM to avoid writing SQL manually and manipulate your tables as they were Python objects. The most famous ORM in the Python community is SQLAlchemy.
I strongly advise you to use it: ...
html5 - canvas element - Multiple layers
...text.fillStyle = 'yellow';
context.fillRect(0,0,600,250);
// Now return the globalCompositeOperation to source-over and draw a
// blue rectangle
context.globalCompositeOperation = 'source-over';
// Draw a blue rectangle
context.fillStyle = 'blue';
context.fil...
Is \d not supported by grep's basic expressions?
...'s -E mode does not. That's so glaring I'm shocked I'm just discovering it now.
– Keith Tyler
Jun 23 '16 at 0:20
1
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How to kill a process running on particular port in Linux?
...00 30070621 16085/java
the number before /java is a process id. Now use kill command to kill the process
kill -9 16085
-9 implies the process will be killed forcefully.
share
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improve...
Associative arrays in Shell scripts
...ys that are built in to the shell. This should work in bash 4.0 (available now on most major distros, though not on OS X unless you install it yourself), ksh, and zsh:
declare -A newmap
newmap[name]="Irfan Zulfiqar"
newmap[designation]=SSE
newmap[company]="My Own Company"
echo ${newmap[company]}
e...
How to change the order of DataFrame columns?
... with a list of the columns, rearranged as needed.
This is what you have now:
In [6]: df
Out[6]:
0 1 2 3 4 mean
0 0.445598 0.173835 0.343415 0.682252 0.582616 0.445543
1 0.881592 0.696942 0.702232 0.696724 0.373551 0.670208
2 0.662527 ...