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How to pad zeroes to a string?
...0:03d}'.format(n)) # python >= 2.6 + python 3
004
>>> print('{foo:03d}'.format(foo=n)) # python >= 2.6 + python 3
004
>>> print('{:03d}'.format(n)) # python >= 2.7 + python3
004
String formatting documentation.
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How do I create a folder in a GitHub repository?
... store empty folders. Just make sure there's a file in the folder like doc/foo.txt and run git add doc or git add doc/foo.txt, and the folder will be added to your local repository once you've committed (and appear on GitHub once you've pushed it).
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HTML: Include, or exclude, optional closing tags?
.... Putting end tags won't automatically make parsing more robust:
<p>foo <p>bar</p> baz</p>
will parse as:
<p>foo</p><p>bar</p> baz
It can only help when you validate documents.
...
Does return stop a loop?
...inally always executes and can "override" the return in the try.
function foo() {
try {
for (var i = 0; i < 10; i++) {
if (i % 3 == 0) {
return i; // This executes once
}
}
} finally {
return 42; // But this still executes
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Reference - What does this error mean in PHP?
...pical example of an Undefined Index notice would be (demo)
$data = array('foo' => '42', 'bar');
echo $data['spinach'];
echo $data[1];
Both spinach and 1 do not exist in the array, causing an E_NOTICE to be triggered.
The solution is to make sure the index or offset exists prior to accessing t...
error: passing xxx as 'this' argument of xxx discards qualifiers
...w. I have a coworker who refers to me as the "const-able". 8v) Change that foo obj; to const foo obj; once and see what happens. Or pass a const reference to a foo.
– Fred Larson
May 12 '11 at 5:06
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Running shell command and capturing the output
...nt:
>>> cmd = ['awk', 'length($0) > 5']
>>> input = 'foo\nfoofoo\n'.encode('utf-8')
>>> result = subprocess.run(cmd, stdout=subprocess.PIPE, input=input)
>>> result.stdout.decode('utf-8')
'foofoo\n'
You can capture errors by passing stderr=subprocess.PIPE (c...
Why is using a wild card with a Java import statement bad?
...davetron5000 If your code contains 10+ wildcard imports, and you use class Foo, and if I read your code without using an IDE (since your argument is that I shouldn't have to use one), how will I know which package Foo came from? Sure, using an IDE, the IDE will tell me, but your entire argument is t...
Check if a key exists inside a json object
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This code causes esLint issue: no-prototype-builtins
foo.hasOwnProperty("bar")
The suggest way here is:
Object.prototype.hasOwnProperty.call(foo, "bar");
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How to get the position of a character in Python?
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foo = ( [pos for pos, char in enumerate(s) if char == c]) will put the coordinates foo in a list format. I find this really helpful
– 3nrique0
Feb 24 '17 at 17:01
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