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How can I check if a URL exists via PHP?
...}
$headers = @get_headers($url);
if($headers && is_array($headers)){
if($followredirects){
// we want the last errorcode, reverse array so we start at the end:
$headers = array_reverse($headers);
}
foreach($h...
How do I parse JSON with Objective-C?
...jsonError];
for (int i=0; i<[allKeys count]; i++) {
NSDictionary *arrayResult = [allKeys objectAtIndex:i];
NSLog(@"name=%@",[arrayResult objectForKey:@"storyboardName"]);
}
file:
[
{
"ID":1,
"idSort" : 0,
"deleted":0,
"storyboardName" : "MLMember",
"dispalyTitle" : "76....
How to check if mod_rewrite is enabled in php?
...ou're using mod_php, you can use apache_get_modules(). This will return an array of all enabled modules, so to check if mod_rewrite is enabled, you could simply do
in_array('mod_rewrite', apache_get_modules());
Unfortunately, you're most likely trying to do this with CGI, which makes it a little ...
Drop columns whose name contains a specific string from pandas DataFrame
...
import pandas as pd
import numpy as np
array=np.random.random((2,4))
df=pd.DataFrame(array, columns=('Test1', 'toto', 'test2', 'riri'))
print df
Test1 toto test2 riri
0 0.923249 0.572528 0.845464 0.144891
1 0.020438 0.332540 0.144455 ...
Only variables should be passed by reference
...quires a reference, because it modifies the internal representation of the array (i.e. it makes the current element pointer point to the last element).
The result of explode('.', $file_name) cannot be turned into a reference. This is a restriction in the PHP language, that probably exists for simpl...
How to smooth a curve in the right way?
...ion does not seem to look "deeper" to see that this is actually a tuple of arrays each of size m, for m data points)
– Chris K
Apr 16 at 9:51
add a comment
...
Removing elements by class name?
...ays, it's because when you remove an element, it also shrinks the elements array.
– Jefferson Lima
Jul 27 '17 at 16:35
...
JavaScript hashmap equivalent
...t. On average it will take n/2 comparisons.
Ordered.
Example #1: a sorted array — doing a binary search we will find our key after ~log2(n) comparisons on average. Much better.
Example #2: a tree. Again it'll be ~log(n) attempts.
Hash table. On average, it requires a constant time. Compare: O(n...
How can I process each letter of text using Javascript?
...
Nope, it can't. forEach() passes the index and the array as second and third argument. I would rather not log that..
– Mr. Goferito
Aug 1 '18 at 20:39
1
...
Get URL query string parameters
...
The function parse_str() automatically reads all query parameters into an array.
For example, if the URL is http://www.example.com/page.php?x=100&y=200, the code
$queries = array();
parse_str($_SERVER['QUERY_STRING'], $queries);
will store parameters into the $queries array ($queries['x']=...