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nodejs how to read keystrokes from stdin
...nswer since this capability was stripped from tty, here's how to get a raw character stream from stdin:
var stdin = process.stdin;
// without this, we would only get streams once enter is pressed
stdin.setRawMode( true );
// resume stdin in the parent process (node app won't quit all by itself
//...
Set breakpoint in C or C++ code programmatically for gdb on Linux
...
By looking here, I found the following way:
void main(int argc, char** argv)
{
asm("int $3");
int a = 3;
a++; // In gdb> print a; expect result to be 3
}
This seems a touch hackish to me. And I think this only works on x86 architecture.
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How to model type-safe enum types?
...urns an Iterator, map, flatMap, filter, etc.
This answer is essentially a selected parts from this article in my blog.
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What method in the String class returns only the first N characters?
...input string to is longer than the provided length N , only the first N characters are to be displayed.
12 Answers
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Encrypt & Decrypt using PyCrypto AES 256
...code's scope - hashing is just a guarantee that the key is usable with the selected cipher.
– zwer
Jun 20 '17 at 20:35
2
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How do I find the width & height of a terminal window?
... wrapper for that. E.g in Perl you can use Term::Size:
use Term::Size qw( chars );
my ( $columns, $rows ) = chars \*STDOUT;
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Replace multiple whitespaces with single whitespace in JavaScript string
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Isn't it obvious? it replaces more than 1 whitespace char with 1 whitespace char. (the desired result)
– War
Mar 22 '13 at 16:05
4
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Is there a minlength validation attribute in HTML5?
...from constraint validation.
<input pattern=".{3,}" required title="3 characters minimum">
<input pattern=".{5,10}" required title="5 to 10 characters">
If you want to create the option to use the pattern for "empty, or minimum length", you could do the following:
<input pattern=...
Disable individual Python unit tests temporarily
...-excursion
(beginning-of-line)
(search-forward "def")
(forward-char)
(if (looking-at "disable_")
(zap-to-char 1 ?_)
(insert "disable_"))))
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Uncaught SyntaxError: Unexpected token with JSON.parse
...l getting this...
In that case it's likely that there are hidden/special characters in the string from whatever source your getting them. When you paste into a validator, they are lost - but in the string they are still there. Those chars, while invisible, will break JSON.parse()
If s is your raw...