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Named regular expression group “(?Pregexp)”: what does “P” stand for?
In Python, the (?P<group_name>…) syntax allows one to refer to the matched string through its name:
3 Answers
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Why can't non-default arguments follow default arguments?
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All required parameters must be placed before any default arguments. Simply because they are mandatory, whereas default arguments are not. Syntactically, it would be impossible for the interpreter to decide which values match which arguments if mixed modes were allowed. A SyntaxE...
How to get screen dimensions as pixels in Android
... pixels you can use getSize:
Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
int width = size.x;
int height = size.y;
If you're not in an Activity you can get the default Display via WINDOW_SERVICE:
WindowManager wm = (WindowManager) con...
How can I wrap or break long text/word in a fixed width span?
...te a span with a fixed width that when I type any thing in the span like <span>lgasdfjksdajgdsglkgsadfasdfadfasdfadsfasdfasddkgjk</span> , a long string of non-spaced text, the word(s) break or wrap to next line.
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Delete duplicate rows from small table
... PostgreSQL 8.3.8 database, which has no keys/constraints on it, and has multiple rows with exactly the same values.
11 Ans...
Rebase array keys after unsetting elements
... my simple, working example:
$array = array(1,2,3,4,5);
for ($i = 0; $i < count($array); $i++) {
if($array[$i] == 1 || $array[$i] == 2) {
array_splice($array, $i, 1);
$i--;
}
}
Will output:
array(3) {
[0]=> int(3)
[1]=> int(4)
[2]=> int(5)
}
T...
Opacity CSS not working in IE8
...itten) has served me when I needed it:
-moz-opacity: 0.70;
opacity:.70;
filter: alpha(opacity=70);
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How to output MySQL query results in CSV format?
...sy way to run a MySQL query from the Linux command line and output the results in CSV format?
38 Answers
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How to design a product table for many kinds of product where each product has many parameters
...e. What should I do now?
Add the field to the main_product_table. Write a script to loop through the electronics and put the correct value from each type_table to the main_product_table. Then drop that column from each type_table.
Now If I was always using the same GetProductData class to interact...
What XML parser should I use in C++? [closed]
...ies in a way that's much more readable in code than a bunch of callbacks.
Alternatives
Expat
Expat is a well-known C++ parser that uses a pull-parser API. It was written by James Clark.
It's current status is active. The most recent version is 2.2.9, which was released on (2019-09-25).
LlamaXML
It i...