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RegEx to extract all matches from string using RegExp.exec
...ns capturing groups for every match! So you can do things like
// get the letters before and after "o"
let matches = "stackoverflow".matchAll(/(\w)o(\w)/g);
for (match of matches) {
console.log("letter before:" + match[1]);
console.log("letter after:" + match[2]);
}
arrayOfAllMatches = [....
What are JavaScript's builtin strings?
...es, "v" was the real "problem" here. I found no other ways of getting this letter except parsing [native code] string, which can be taken from any built-in method. Since I limited myself with having no strings and no numbers except 1 used, I needed to exploit some method that has only available char...
How does the Brainfuck Hello World actually work?
...r-case 'e', which is then output.
As 'l' happens
to be the seventh letter after 'e', to output 'll' another seven are
added (+++++++) to a[2] and the result is output twice.
'o' is the
third letter after 'l', so a[2] is incremented three more times and
output the result.
Th...
How to use Greek symbols in ggplot2?
My categories need to be named with Greek letters. I am using ggplot2 , and it works beautifully with the data. Unfortunately I cannot figure out how to put those greek symbols on the x axis (at the tick marks) and also make them appear in the legend. Is there any way to do it?
...
delete_all vs destroy_all?
...l
You can do :
u = User.find_by_name('JohnBoy')
UsageIndex.destroy_all "user_id = #{u.id}"
The result is one query to destroy all the associated records
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Globally override key binding in Emacs
...posterity another solution.
From The Emacs Manual:
"Don't define C-c letter as a key in Lisp programs. Sequences consisting of C-c and a letter (either upper or lower case) are reserved for users; they are the only sequences reserved for users, so do not block them."
If you bind your persona...
What characters are forbidden in Windows and Linux directory names?
...f 'shell' fame) had a directory containing 254 files, one for every single letter (character code) that can appear in a file name (excluding /, '\0'; the name . was the current directory, of course). It was used to test the Bourne shell and routinely wrought havoc on unwary programs such as backup ...
What is the meaning of the CascadeType.ALL for a @ManyToOne JPA association
...dresses {
@ManyToOne(cascade = CascadeType.REFRESH) @JoinColumn(name = "user_id")
protected User addressOwner;
}
This way you dont need to worry about using fetch in annotations. But remember when deleting the User you will also delete connected address to user object.
...
Correct Bash and shell script variable capitalization
...e Shell and Utilities
volume of POSIX.1-2017 consist solely of uppercase letters, digits, and the
underscore ( _ ) from the characters defined in Portable Character Set
and do not begin with a digit.
...
The name space of environment variable names containing lowercase letters is
reser...
Difference between encoding and encryption
...tted safely, so it may be necessary to encode data using base64 (uses only letters, numbers and two safe characters).
When encoding or decoding, the emphasis is placed on everyone having the same algorithm, and that algorithm is usually well-documented, widely distributed and fairly easily implemen...