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How can I detect if this dictionary key exists in C#?
...th contact data. I have the following code, which is functional , but not ideal:
5 Answers
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UIViewController viewDidLoad vs. viewWillAppear: What is the proper division of labor?
...s been a bit unclear on the type of tasks that should be assigned to viewDidLoad vs. viewWillAppear : in a UIViewController subclass.
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How to upgrade Eclipse for Java EE Developers?
...the juno release repo. It was confusing that some of the updated features did not show as installed, even thought they were.
– Mark Mikofski
Jul 25 '13 at 6:28
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How to set child process' environment variable in Makefile
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As MadScientist pointed out, you can export individual variables with:
export MY_VAR = foo # Available for all targets
Or export variables for a specific target (target-specific variables):
my-target: export MY_VAR_1 = foo
my-target: export MY_VAR_2 = bar
my-target: ex...
No module named setuptools
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I was going to vote you down for not providing the command to install setuptools but you really do need to go to that URL to see how to install it on your specific system.
– rob
May 2 '16 at 19:53
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Relative frequencies / proportions with dplyr
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This seems an invalid answer on dplyr 0.7.1. It does the frequency calculation overall on "gear", instead of within each level of "am".
– Edwin
Jul 19 '17 at 14:16
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Django admin: how to sort by one of the custom list_display fields that has no database field
..._orders.admin_order_field = 'order__count'
This way you only annotate inside the admin interface. Not with every query that you do.
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Changing the color of the axis, ticks and labels for a plot in matplotlib
...nge the color of the axis, as well as ticks and value-labels for a plot I did using matplotlib an PyQt.
3 Answers
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How to customize a requirements.txt for multiple environments?
...s and use the "-r" flag to tell pip to include the contents of one file inside another. You can break out your requirements into a modular folder hierarchy like this:
`-- django_project_root
|-- requirements
| |-- common.txt
| |-- dev.txt
| `-- prod.txt
`-- requirements.txt
The files' conte...
Replacing some characters in a string with another character
...ow-up question (feel free to link back here for reference, of course). Incidentally, , and ~ are not regex metacharacters (though ~ gets expanded to $HOME in some positions by Bash and some other shells; not sh however).
– tripleee
Jul 26 '16 at 4:03
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