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Count the number occurrences of a character in a string
...nswers said, using the string method count() is probably the simplest, but if you're doing this frequently, check out collections.Counter:
from collections import Counter
my_str = "Mary had a little lamb"
counter = Counter(my_str)
print counter['a']
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How do I join two lines in vi?
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Shift+J removes the line change character from the current line, so by pressing "J" at any place in the line you can combine the current line and the next line in the way you want.
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What is the best IDE to develop Android apps in? [closed]
...S
Android Studio has officially come out of beta and been released. It is now the official IDE for Android Development - Eclipse won't be supported anymore. It is definitely the IDE of choice for Android Development. Link to download page: http://developer.android.com/sdk/index.html
NEWS
As of ...
What is the result of % in Python?
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@P.MyerNore I know this is almost 3 years later, but may help others. Read the first highlighted para in sec. 5.6.2 linked above by KurzedMetal. The "x %= {}" is simply a short-form for "x = x % {...}"
– Sujay Phadke
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Get the latest record from mongodb collection
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This is a rehash of the previous answer but it's more likely to work on different mongodb versions.
db.collection.find().limit(1).sort({$natural:-1})
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git rebase without changing commit timestamps
...k,
whereas the committer is the person who last applied the work.
So, if you send in a patch to a project and one of the core members applies the patch, both of you get credit.
To be extra clear, in this instance, as Olivier comments:
the --ignore-date does the opposite of what I was trying ...
How to determine whether code is running in DEBUG / RELEASE build?
...t and clicking on the build settings tab. Search for DEBUG and look to see if indeed DEBUG is being set.
Pay attention though. You may see DEBUG changed to another variable name such as DEBUG_MODE.
then conditionally code for DEBUG in your source files
#ifdef DEBUG
// Something to log your se...
Google Chrome form autofill and its yellow background
... there is error, i dont maybe syntax changed but this works now: box-shadow: inset 0 0 0 1000px white !important;
– Muhammad Umer
Apr 1 '16 at 2:08
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What is the meaning of “… …” token? i.e. double ellipsis operator on parameter pack
... requires a parameter before the varargs list, so the prototype f(...) specifically allowed by C++ is useless. Cross-referencing with C99, it is illegal in plain C. So, this is most bizarre.
Usage note
By request, here is a demonstration of the double ellipsis:
#include <cstdio>
#include &l...
How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar
... for the normal display and another one for the UISearchBar's table view.
If you only use one FRC (NSFetchedResultsController) then the original UITableView (not the search table view that is active while searching) will possibly have callbacks called while you are searching and try to incorrectly ...