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Rearrange columns using cut
...made up of
one
range, or many ranges separated by commas. Selected input is written
in the same order that it is read, and is written exactly once.
It reaches field 1 first, so that is printed, followed by field 2.
Use awk instead:
awk '{ print $2 " " $1}' file.txt
...
How to call a PHP function on the click of a button
..."insert" value="insert" />
<input type="submit" class="button" name="select" value="select" />
jQuery:
$(document).ready(function(){
$('.button').click(function(){
var clickBtnValue = $(this).val();
var ajaxurl = 'ajax.php',
data = {'action': clickBtnValu...
General guidelines to avoid memory leaks in C++ [closed]
...tion will have a buffer "on the stack of the class" for small strings (~15 chars), and will use a pointer to a memory in the heap for larger strings... But from the outside, std::string is still a value type that you declare (usually) on the stack and you use as you would use an integer (as opposed ...
jQuery selector regular expressions
...d or regular expressions (not sure on the exact terminology) with a jQuery selector.
10 Answers
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Remove all special characters, punctuation and spaces from string
I need to remove all special characters, punctuation and spaces from a string so that I only have letters and numbers.
16 A...
Remove the last three characters from a string
I want to remove last three characters from a string:
14 Answers
14
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List of all special characters that need to be escaped in a regex
...a regex for matching the message. The template/message may contain special characters.
10 Answers
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How do I iterate over the words of a string?
...or>
template <typename Out>
void split(const std::string &s, char delim, Out result) {
std::istringstream iss(s);
std::string item;
while (std::getline(iss, item, delim)) {
*result++ = item;
}
}
std::vector<std::string> split(const std::string &s, cha...
python list in sql query as parameter
...I paramstyle.
placeholders= ', '.join(placeholder for unused in l)
query= 'SELECT name FROM students WHERE id IN (%s)' % placeholders
cursor.execute(query, l)
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Is there a valid reason for enforcing a maximum width of 80 characters in a code file, this day and
...ent setups: 1) in an ssh window connected to a remote machine. which is 80 characters wide by default. and 2) In Visual Studio, with two panels side-by-side so I can see header and cpp file at the same time.
– Enno
Nov 13 '08 at 21:27
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