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Python dictionary: Get list of values for list of keys
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A couple of other ways than list-comp:
Build list and throw exception if key not found: map(mydict.__getitem__, mykeys)
Build list with None if key not found: map(mydict.get, mykeys)
Alternatively, using operator.itemgetter can return a tuple:
from operator import itemget...
Right way to initialize an OrderedDict using its constructor such that it retains order of initial d
...e anything. There's no difference between OrderedDict([(i,i) for i in l]) and OrderedDict([('b', 'b'), ('a', 'a'), ('c', 'c'), ('aa', 'aa')]). The list comprehension is evaluated and creates the list and it is passed in; OrderedDict knows nothing about how it was created.
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How do I disable the “Press ENTER or type command to continue” prompt in Vim?
Is there any way to disable the "Press ENTER or type command to continue" prompt that appears after executing an external command?
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What do the result codes in SVN mean?
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For additional details see the SVNBook: "Status of working copy files and directories".
The common statuses:
U: Working file was updated
G: Changes on the repo were automatically merged into the working copy
M: Working copy is modified
C: This file conflicts with the version...
How to detect modifier key states in WPF?
...lution. It also allows you to check all modifiers at once. If you want to handle Ctrl+F, you won't want to handle Ctrl+Shift+F, so you could just check for (e.Key == Key.F && e.KeyboardDevice.Modifiers == ModifierKeys.Control) instead of all the other stuff...
– ygoe
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How can I use grep to show just filenames on Linux?
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The standard option grep -l (that is a lowercase L) could do this.
From the Unix standard:
-l
(The letter ell.) Write only the names of files containing selected
lines to standard output. Pathnames are written once per fi...
How to link godaddy domain with AWS Elastic Beanstalk environment?
...to create a CNAME or do any forwarding - this is bad from the point of SEO and not recommended by Amazon. Even you should not point a record to IP directly - it will cause a lot of troubles in the future because IP can be changed any moment.
The most elegant way is to migrate DNS service from GoDad...
What does the property “Nonatomic” mean?
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Take a look at the Apple Docs.
Basically, if you say nonatomic, and you generate the accessors using @synthesize, then if multiple threads try to change/read the property at once, badness can happen. You can get partially-written values or over-released/retained objects, which can easily ...
Calling startActivity() from outside of an Activity context
I have implemented a ListView in my Android application. I bind to this ListView using a custom subclass of the ArrayAdapter class. Inside the overridden ArrayAdapter.getView(...) method, I assign an OnClickListener . In the onClick method of the OnClickListener , I want to launch a n...
Convert javascript array to string
I'm trying to iterate over a "value" list and convert it into a string. Here is the code:
14 Answers
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