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ruby send method passing multiple parameters
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237
send("i_take_multiple_arguments", *[25.0,26.0]) #Where star is the "splat" operator
or
send(...
Explaining Python's '__enter__' and '__exit__'
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436
Using these magic methods (__enter__, __exit__) allows you to implement objects which can be us...
How to automatically generate a stacktrace when my program crashes
...st
Error: signal 11:
./test(handler+0x19)[0x400911]
/lib64/tls/libc.so.6[0x3a9b92e380]
./test(baz+0x14)[0x400962]
./test(bar+0xe)[0x400983]
./test(foo+0xe)[0x400993]
./test(main+0x28)[0x4009bd]
/lib64/tls/libc.so.6(__libc_start_main+0xdb)[0x3a9b91c4bb]
./test[0x40086a]
This shows the load module, ...
What's the difference between echo, print, and print_r in PHP?
...4) {
[0]=>
int(0)
[1]=>
float(0)
[2]=>
bool(false)
[3]=>
string(0) ""
}
Array
(
[0] => 0
[1] => 0
[2] =>
[3] =>
)
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Empty set literal?
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edited May 13 at 17:55
phoenix
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answ...
How to watch for array changes?
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173
There are a few options...
1. Override the push method
Going the quick and dirty route, you co...
Is there a difference between “==” and “is”?
...e objects referred to by the variables are equal.
>>> a = [1, 2, 3]
>>> b = a
>>> b is a
True
>>> b == a
True
# Make a new copy of list `a` via the slice operator,
# and assign it to variable `b`
>>> b = a[:]
>>> b is a
False
>>> b ...
Import module from subfolder
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139
There's no need to mess with your PYTHONPATH or sys.path here.
To properly use absolute import...
Python division
...1
or from __future__ import division, which the forces / to adopt Python 3.x's behavior that always returns a float.
>>> from __future__ import division
>>> (10 - 20) / (100 - 10)
-0.1111111111111111
sh...
How to find the JVM version from a program?
...
AlexRAlexR
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6
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