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Are tuples more efficient than lists in Python?
...much faster than assigning a list.
>>> def a():
... x=[1,2,3,4,5]
... y=x[2]
...
>>> def b():
... x=(1,2,3,4,5)
... y=x[2]
...
>>> import dis
>>> dis.dis(a)
2 0 LOAD_CONST 1 (1)
3 LOAD_CONST 2 ...
How to merge lists into a list of tuples?
...
460
In Python 2:
>>> list_a = [1, 2, 3, 4]
>>> list_b = [5, 6, 7, 8]
>>&g...
Why are iframes considered dangerous and a security risk?
...laneDiodeus - James MacFarlane
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19
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Why check both isset() and !empty()
...
422
This is completely redundant. empty is more or less shorthand for !isset($foo) || !$foo, and !...
Difference between char* and const char*?
...
417
char* is a mutable pointer to a mutable character/string.
const char* is a mutable pointer to...
Remove an entire column from a data.frame in R
...
421
You can set it to NULL.
> Data$genome <- NULL
> head(Data)
chr region
1 chr1 C...
How to run JUnit test cases from the command line
...ptions>
Find a brief summary at https://stackoverflow.com/a/52373592/1431016 and full details at https://junit.org/junit5/docs/current/user-guide/#running-tests-console-launcher
For JUnit 4.X it's really:
java -cp .:/usr/share/java/junit.jar org.junit.runner.JUnitCore [test class name]
But ...
Which terminal command to get just IP address and nothing else?
...|
edited Dec 29 '11 at 23:45
answered Dec 16 '11 at 2:46
Bo...
Xcode 4, Core Data Model Version - Set Current Version
I'm confused about how to perform the following function in Xcode 4 to set the model to use after creating a versioned model.
...
Ways to save Backbone.js model data?
...se->status(200); // OK!
// But you can send back other status like 400 which can trigger an error callback.
});
$app->delete('/donut/:id', function($id) use ($app) {
// Code to delete donut with id, $id
// Bye bye resource
});
So you've almost made the full round trip! Go get a ...