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appending array to FormData and send via AJAX
...
You have several options:
Convert it to a JSON string, then parse it in PHP (recommended)
JS
var json_arr = JSON.stringify(arr);
PHP
$arr = json_decode($_POST['arr']);
Or use @Curios's method
Sending an array via FormData.
Not recommended: Seriali...
Why unsigned integer is not available in PostgreSQL?
I came across this post ( What is the difference between tinyint, smallint, mediumint, bigint and int in MySQL? ) and realized that PostgreSQL does not support unsigned integer.
...
Difference between null and empty (“”) Java String
...not, 20 is a number). Same case for null: it's not a string, but it can be converted to one if you try to add it.
– daboross
Mar 4 '18 at 9:13
...
Undefined, unspecified and implementation-defined behavior
...n the program!
Let's look at a classic example:
#include <iostream>
int main()
{
char* p = "hello!\n"; // yes I know, deprecated conversion
p[0] = 'y';
p[5] = 'w';
std::cout << p;
}
The variable p points to the string literal "hello!\n", and the two assignments below ...
How do I get the first element from an IEnumerable in .net?
...e enumerable contains more than one item.
Edit: Thanks Marc Gravell for pointing out that I need to dispose of my IEnumerator object after using it - I've edited the non-LINQ example to display the using keyword to implement this pattern.
...
How to simplify a null-safe compareTo() implementation?
... .thenComparing(Metadata::getValue, nullSafeStringComparator);
public int compareTo(Metadata that) {
return metadataComparator.compare(this, that);
}
share
|
improve this answer
|...
Using scanf() in C++ programs is faster than using cin?
...and XOR all of the numbers.
iostream version:
#include <iostream>
int main(int argc, char **argv) {
int parity = 0;
int x;
while (std::cin >> x)
parity ^= x;
std::cout << parity << std::endl;
return 0;
}
scanf version:
#include <stdio.h>
int main...
Haversine Formula in Python (Bearing and Distance between two GPS points)
... two points
on the earth (specified in decimal degrees)
"""
# convert decimal degrees to radians
lon1, lat1, lon2, lat2 = map(radians, [lon1, lat1, lon2, lat2])
# haversine formula
dlon = lon2 - lon1
dlat = lat2 - lat1
a = sin(dlat/2)**2 + cos(lat1) * cos(lat2) ...
UIButton custom font vertical alignment
...ls
FontTools include a TTX tool which enables conversion to and from XML.
Convert your font to .ttx in the same folder
ttx myFontFile.otf
Make the necessary edits to .ttx and delete the .otf file as this will be replaced in the next step.
Convert the file back to .otf
ttx myFontFile.ttx
Motiv...
Declaring a custom android UI element using XML
...get this
a.recycle();
}
R.styleable.MyCustomView is an autogenerated int[] resource where each element is the ID of an attribute. Attributes are generated for each property in the XML by appending the attribute name to the element name. For example, R.styleable.MyCustomView_android_text contai...