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Why does Popen.communicate() return b'hi\n' instead of 'hi'?
...of the bytes you have. If you know the encoding of the bytes you received from the subprocess, you can use decode() to convert them into a printable str:
>>> print(b'hi\n'.decode('ascii'))
hi
Of course, this specific example only works if you actually are receiving ASCII from the subpro...
Convert integer into its character equivalent, where 0 => a, 1 => b, etc
...
Assuming you want lower case letters:
var chr = String.fromCharCode(97 + n); // where n is 0, 1, 2 ...
97 is the ASCII code for lower case 'a'. If you want uppercase letters, replace 97 with 65 (uppercase 'A'). Note that if n > 25, you will get out of the range of letters.
...
(-2147483648> 0) returns true in C++?
...t can: 2147483648 has unsigned int ???? type.
In the second you force int from the unsigned.
const bool i= (-2147483648 > 0) ; // --> true
warning C4146: unary minus operator applied to unsigned type, result still unsigned
Here are related "curiosities":
const bool b= (-21474836...
Instance attribute attribute_name defined outside __init__
...hen setting them later in a parse_args function OR returning a short tuple from parse_args is OK. ideally, parse_args should be testable without needing a wizard instance.
– Erik Aronesty
Sep 3 '19 at 18:26
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How to get UILabel to respond to tap?
...ties pane, make sure "User Interaction Enabled" is checked for the label. From the tap gesture (at the bottom of your view controller in the storyboard), ctrl+click and drag to your ViewController.h file and create an Action. Then implement the action in the ViewController.m file.
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How to run crontab job every week on Sunday
...e of sun, mon, tue, wed, thu, fri, or sat for the day. This also saves you from having to choose between using 0 or 7 for sunday.
– flu
May 15 '14 at 13:15
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Practical uses for AtomicInteger
...g algorithms.
Here is an example of non-blocking random number generator from Brian Göetz's Java Concurrency In Practice:
public class AtomicPseudoRandom extends PseudoRandom {
private AtomicInteger seed;
AtomicPseudoRandom(int seed) {
this.seed = new AtomicInteger(seed);
}
...
how to return index of a sorted list? [duplicate]
...)
>>> sort_index
array([2, 0, 1, 3, 4])
If not available, taken from this question, this is the fastest method:
>>> vals = [2,3,1,4,5]
>>> sorted(range(len(vals)), key=vals.__getitem__)
[2, 0, 1, 3, 4]
...
Using Predicate in Swift
...". That is not correct. That uses string interpolation, which is different from predicate formatting and will generally not work for this.)
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Python function as a function argument?
...turn a list of the results.
filter(function, iterable) - Construct a list from those elements
of iterable for which function returns true.
reduce(function, iterable[,initializer]) - Apply function of
two arguments cumulatively to the items of iterable, from left to
right, so as to redu...