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How to efficiently build a tree from a flat structure?
...ve would be to just remove the Parent property, it's not necessary for the core algorithm.
– Martin Schmidt
Dec 13 '16 at 21:37
...
Why should I use core.autocrlf=true in Git?
...ive EOL, you are better off leaving autocrlf to false (git config --global core.autocrlf false).
Note that this config would be a local one (because config isn't pushed from repo to repo)
If you want the same config for all users cloning that repo, check out "What's the best CRLF handling strategy...
Pandas DataFrame column to list [duplicate]
...
colA colB
0 1 4
1 2 5
2 1 6
<class 'pandas.core.frame.DataFrame'>
df['colA'] == filter_value
0 True
1 False
2 True
Name: colA, dtype: bool
<class 'pandas.core.series.Series'>
df[rows_to_keep]['colB']
0 4
2 6
Name: colB, dtype: int64
<cla...
Changing capitalization of filenames in Git
...force required anymore).
The other alternative is:
git config --global core.ignorecase false
And rename the file directly; git add and commit.
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How should I unit test threaded code?
...est Patterns" and is called "Humble Object" (p. 695): You have to separate core logic code and anything which smells like asynchronous code from each other. This would result to a class for the core logic, which works synchronously.
This puts you into the position to test the core logic code in a s...
How to do parallel programming in Python?
...u. Since we did not pass processes, it will spawn one process for each CPU core on your machine. Each CPU core can execute one process simultaneously.
If you want to map a list to a single function you would do this:
args = [A, B]
results = pool.map(solve1, args)
Don't use threads because the GI...
How to list only the file names that changed between two commits?
...There are also --numstat
$ git diff --numstat HEAD~5 HEAD
40 10 core/src/main/java/org/apache/calcite/rex/RexSimplify.java
1 1 core/src/main/java/org/apache/calcite/sql/fun/SqlTrimFunction.java
16 0 core/src/main/java/org/apache/calcite/sql2rel/SqlToRelConverter.jav...
How to send email via Django?
...rtproject gmail
Edit settings.py with code below:
EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend'
EMAIL_USE_TLS = True
EMAIL_HOST = 'smtp.gmail.com'
EMAIL_HOST_USER = 'youremail@gmail.com'
EMAIL_HOST_PASSWORD = 'email_password'
EMAIL_PORT = 587
Run interactive mode: python manage.py ...
How to Deal with Temporary NSManagedObject instances?
...efore you decide to store them but am worried about how "supported" by the CoreData contract and therefore how futureproof it is. Does apple mention or use this approach anywhere? Because if not, a future iOS release could change the dynamic properties to depend on the MOC and break this approach. T...
FixedThreadPool vs CachedThreadPool: the lesser of two evils
...ing 150 threads within in ONE JRE only makes sense if you have massive CPU cores/threads underneath, which most likely is not the case. Depending on the OS and RAM in use, creating more than n threads might even result in your JRE being terminated because of OOM errors. So you should really disting...