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Are Javascript arrays sparse?
That is, if I use the current time as an index into the array:
7 Answers
7
...
Reverse a string in Python
...hile loop:
def reverse_a_string_slowly(a_string):
new_string = ''
index = len(a_string)
while index:
index -= 1 # index = index - 1
new_string += a_string[index] # new_string = new_string + character
return new_string
This is theoretically bad be...
Convert pem key to ssh-rsa format
..., int bufferLen, unsigned char* pBuffer)
{
int adjustedLen = bufferLen, index;
if (*pBuffer & 0x80)
{
adjustedLen++;
pEncoding[4] = 0;
index = 5;
}
else
{
index = 4;
}
pEncoding[0] = (unsigned char) (adjustedLen >> 24);
pEncoding[1] = (uns...
json_encode sparse PHP array as JSON array, not JSON object
...l - it has keys 0 and 2, but doesn't have 1 as a key.
Just having numeric indexes isn't enough. json_encode will only encode your PHP array as a JSON array if your PHP array is sequential - that is, if its keys are 0, 1, 2, 3, ...
You can reindex your array sequentially using the array_values func...
Split array into chunks
...unk_size) => Array(Math.ceil(array.length / chunk_size)).fill().map((_, index) => index * chunk_size).map(begin => array.slice(begin, begin + chunk_size));.
– Константин Ван
Feb 4 '18 at 12:39
...
How to remove item from array by value? [duplicate]
...&& this.length) {
what = a[--L];
while ((ax = this.indexOf(what)) !== -1) {
this.splice(ax, 1);
}
}
return this;
};
var ary = ['three', 'seven', 'eleven'];
ary.remove('seven');
/* returned value: (Array)
three,eleven
*/
To make it a global-
...
Rails layouts per action?
... case action_name
when "new", "create"
"some_layout"
when "index"
"other_layout"
else
"application"
end
end
end
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PHP passing $_GET in linux command prompt
...value" ; \
php -e -r 'parse_str($_SERVER["QUERY_STRING"], $_GET); include "index.php";'
Note that you can do the same with $_POST and $_COOKIE as well.
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How to install packages using pip according to the requirements.txt file from a local directory?
...
This works for me:
$ pip install -r requirements.txt --no-index --find-links file:///tmp/packages
--no-index - Ignore package index (only looking at --find-links URLs instead).
-f, --find-links <URL> - If a URL or path to an html file, then parse for links to archives.
If...
Reset PHP Array Index
...merica" );
$arrayValues = array_values($array);// returns all values with indexes
echo '<pre>';
print_r($arrayValues);
echo '</pre>';
Output:
Array
(
[0] => Hello
[1] => Moo
[2] => America
)
You want to get keys of an array:
$arrayKeys = array_keys($array);// ...