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How can I recover a lost commit in Git?
...urs worth of work.
– josephting
Jan 10 '19 at 6:30
41
This saved my life.
–...
Creating an empty list in Python
...how you can test which piece of code is faster:
% python -mtimeit "l=[]"
10000000 loops, best of 3: 0.0711 usec per loop
% python -mtimeit "l=list()"
1000000 loops, best of 3: 0.297 usec per loop
However, in practice, this initialization is most likely an extremely small part of your program, ...
Does JavaScript have “Short-circuit” evaluation?
...
+100
This answer goes into great detail on how short-circuiting works in JavaScript, with all the gotcha's and also relevant themes such ...
How to check status of PostgreSQL server Mac OS X
...et something like this:
$ show-pg-status
pg_ctl: server is running (PID: 11030)
/usr/local/Cellar/postgresql/9.2.4/bin/postgres
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Python list of dictionaries search
...erator expression:
>>> dicts = [
... { "name": "Tom", "age": 10 },
... { "name": "Mark", "age": 5 },
... { "name": "Pam", "age": 7 },
... { "name": "Dick", "age": 12 }
... ]
>>> next(item for item in dicts if item["name"] == "Pam")
{'age': 7, 'name': 'Pam'}
If y...
Why use Dijkstra's Algorithm if Breadth First Search (BFS) can do the same thing faster?
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edited Nov 10 '11 at 9:11
answered Sep 29 '10 at 0:58
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How can we match a^n b^n with Java regex?
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+100
The answer is, needless to say, YES! You can most certainly write a Java regex pattern to match anbn. It uses a positive lookahead f...
How can I check if a URL exists via PHP?
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answered Feb 17 '10 at 12:10
karim79karim79
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TypeScript sorting an array
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answered Feb 10 '14 at 21:08
SLaksSLaks
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How to use OR condition in a JavaScript IF statement?
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answered Mar 2 '10 at 14:39
Luca RocchiLuca Rocchi
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