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Convert integer to hexadecimal and back again
...Store integer 182
int intValue = 182;
// Convert integer 182 as a hex in a string variable
string hexValue = intValue.ToString("X");
// Convert the hex string back to the number
int intAgain = int.Parse(hexValue, System.Globalization.NumberStyles.HexNumber);
from http://www.geekpedia.com/KB8_How-d...
Why does C++11 not support designated initializer lists as C99? [closed]
...urmountable problems with this approach; given:
struct X {
int c;
char a;
float b;
};
What order would these functions be called in in c99: struct X foo = {.a = (char)f(), .b = g(), .c = h()}? Surprisingly, in c99:
The order of evaluation of the subexpressions in any initializer i...
How can I negate the return-value of a process?
...ns:
!(p4 labels | grep GIT_TAG_ON_A_BRANCH)
to check that the given string is not printed by 'p4 labels'.
This is problematic, because according to POSIX:
"If the pipeline begins with the reserved word ! and command1 is a subshell command, the application shall ensure that the ( o...
Why can't Python parse this JSON data?
...
That is why your text is type unicode not string. Most time it is better to have text in unicode for german umlauts and for sharing text results with other modules/programs etc. . So you're good!
– Michael P
Aug 29 '15 at 11:56
...
if A vs if A is not None:
...back to database stuff. There's a big difference between NULL and an empty string. An empty string typically says "there's a value here, and that value is nothing at all". NULL says "this value hasn't been entered."
In each of those cases, you'd want to use if A is None. You're checking for a speci...
What should a Multipart HTTP request with multiple files look like? [duplicate]
... just to avoid any confusion: notice that before each boundary string in the content there are two extra dashes --<boundary>. For the last line is --<boundary>--
– Radu Simionescu
Jun 14 '13 at 12:03
...
Convert to binary and keep leading zeros in Python
...most compact and direct option.
If you are putting the result in a larger string, use an formatted string literal (3.6+) or use str.format() and put the second argument for the format() function after the colon of the placeholder {:..}:
>>> value = 14
>>> f'The produced output, i...
Best way to strip punctuation from a string
...om an efficiency perspective, you're not going to beat
s.translate(None, string.punctuation)
For higher versions of Python use the following code:
s.translate(str.maketrans('', '', string.punctuation))
It's performing raw string operations in C with a lookup table - there's not much that will...
Create an array with same element repeated multiple times
...ate (05/11/2019):
Another way, without using fill or from, that works for string of any length:
Array.apply(null, Array(3)).map(_ => 'abc') // ['abc', 'abc', 'abc']
Same as above answer. Adding for sake of completeness.
...
Parse JSON String into a Particular Object Prototype in JavaScript
I know how to parse a JSON String and turn it into a JavaScript Object.
You can use JSON.parse() in modern browsers (and IE9+).
...