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Cloning an Object in Node.js
...ion is now marked as deprecated in the documentation of Node.js:
The util._extend() method was never intended to be used outside of internal Node.js modules. The community found and used it anyway.
It is deprecated and should not be used in new code. JavaScript comes with very similar built-in func...
MySQL check if a table exists without throwing an exception
...PDO syntax for it, but this seems pretty straight-forward:
$result = mysql_query("SHOW TABLES LIKE 'myTable'");
$tableExists = mysql_num_rows($result) > 0;
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Why does 0.ToString(“#.##”) return an empty string instead of 0.00 or at least 0?
...nterestingly, if you do this: 0.ToString("#.0#"); you get: .0
If you want all three digits: 0.ToString("0.00"); produces: 0.00
From the comments to this answer, your argument seems to be,
it should show '0', because why would anyone ever want to see an empty string if the numeric value is 0?...
Properly escape a double quote in CSV
...le double quote to escape a double quote. You can use a command-line tool called csvfix to detect any lines which don't conform: csvfix check -nl -v [filename]
– Sam Critchley
Jun 30 '16 at 14:51
...
Perl build, unit testing, code coverage: A complete working example
...
It took me a while and it also took me taking small snippets from a number of different sources and melting them together, but I think I have a small working example that sufficiently demonstrates to a Perl newbie the Perl build process including unit testing and code cove...
How to remove the border highlight on an input text element
...:
input.middle:focus {
outline-width: 0;
}
Or in general, to affect all basic form elements:
input:focus,
select:focus,
textarea:focus,
button:focus {
outline: none;
}
In the comments, Noah Whitmore suggested taking this even further to support elements that have the contenteditable ...
How to check for null in Twig?
... Notice: as Twig 2.x check for variable is equal to value like is_ sameas must be {% if var is same as(false) %} not {% if var is sameas(false) %} see Doc url => twig.symfony.com/doc/2.x/tests/sameas.html
– ahmed hamdy
Jul 15 '19 at 17:01
...
Storing JSON in database vs. having a new column for each key
...opularity, I figured it was worth an update.
When this question was originally posted, MySQL had no support for JSON data types and the support in PostgreSQL was in its infancy. Since 5.7, MySQL now supports a JSON data type (in a binary storage format), and PostgreSQL JSONB has matured significant...
What is the meaning of the /dist directory in open source projects?
Since I first saw a dist/ directory in many open source projects, usually on GitHub, I've been wondering what it means.
4...
How does the Brainfuck Hello World actually work?
...ad a decimal ASCII code 97 to memory:
...[0][0][*97*][0][0]...
You generally want to think that way, however the truth is a bit more complex. The truth is BF does not read a character but a byte (whatever that byte is). Let me show you example:
In linux
$ printf ł
prints:
ł
which is spec...