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Regular expression to get a string between two strings in Javascript
...ng pattern. However, a dot . in JavaScript regex does not match line break characters, so, what will work in 100% cases is a [^] or [\s\S]/[\d\D]/[\w\W] constructs.
ECMAScript 2018 and newer compatible solution
In JavaScript environments supporting ECMAScript 2018, s modifier allows . to match any c...
How can I hash a password in Java?
...te[16];
random.nextBytes(salt);
KeySpec spec = new PBEKeySpec("password".toCharArray(), salt, 65536, 128);
SecretKeyFactory f = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
byte[] hash = f.generateSecret(spec).getEncoded();
Base64.Encoder enc = Base64.getEncoder();
System.out.printf("salt: %s...
Remove portion of a string after a certain character
...
+1 It's the only one that works if the control characters are NOT present (unlike the others that return an empty string if the control characters are not present in the source string)
– Tom Auger
Apr 28 '15 at 2:26
...
Why is “int i = 2147483647 + 1;” OK, but “byte b = 127 + 1;” is not compilable?
... if the expression is a constant expression (§15.28) of type byte, short, char or int :
A narrowing primitive conversion may be used if the type of the variable is byte, short, or char, and the value of the constant expression is representable in the type of the variable.
Without this clause, ...
How to find index of all occurrences of element in array?
...
array.reduce((a, e, i) => (e === value) ? a.concat(i) : a, [])
– yckart
Dec 21 '16 at 20:46
...
How does this print “hello world”?
...01100100100111110111111110111101100011000010101000
The program decodes a character for every 5-bits group, from right to left
00100|01100|10010|01111|10111|11111|01111|01100|01100|00101|01000
d | l | r | o | w | | o | l | l | e | h
5-bit codification
For 5 bits, it is...
How can I create directory tree in C++/Linux?
...#include "sysstat.h"
typedef struct stat Stat;
static int do_mkdir(const char *path, mode_t mode)
{
Stat st;
int status = 0;
if (stat(path, &st) != 0)
{
/* Directory does not exist. EEXIST for race condition */
if (mkdir(path, mode) != 0 ...
What's the difference between utf8_general_ci and utf8_unicode_ci?
...or "ǽ" == "æ". For sorting this makes sense but could be surprising when selecting via equalities or dealing with unique indices - bugs.mysql.com/bug.php?id=16526
– Mat Schaffer
Mar 13 '15 at 15:22
...
How to replace all occurrences of a character in string?
What is the effective way to replace all occurrences of a character with another character in std::string ?
15 Answers
...
Passing base64 encoded strings in URL
...ed to url-encode it, since base64 strings can contain the "+", "=" and "/" characters which could alter the meaning of your data - look like a sub-folder.
Valid base64 characters are below.
ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=
...