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How to profile a bash shell script slow startup?
...e set -x later and set +x earlier (or bracket several sections of interest selectively).
Although it's not as fine-grained as GNU date's nanoseconds, Bash 5 includes a variable which gives the time in microseconds. Using it saves you from spawning an external executable for every line and works on ...
Append text to input field
...ple, but I would add one extra note to it. You should really cache jQuery selections, there is no reason to call $("#input-field-id") twice:
var input = $( "#input-field-id" );
input.val( input.val() + "more text" );
The other option, .val() can also take a function as an argument. This has the...
Regex Pattern to Match, Excluding when… / Except between
...tring[] ExceptionStrings {
set { m_exceptionRegexes = from es in value select new Regex(es); }
}
public bool IsMatch(string testStr) {
return (
m_searchRegex.IsMatch(testStr)
&& !m_exceptionRegexes.Any(er => er.IsMatch(testStr))
);
}
}
public class App {
...
What is the _snowman param in Ruby on Rails 3 forms for?
...orrectly concatenates the utf8 parameter and its value with the value of a selection option in the form.
– Christer Fernstrom
May 28 '14 at 16:30
add a comment
...
Match multiple cases classes in scala
...either sb or sc get bound, but you don't know which, so you'd need further selection logic to decide which to use (given that they were bound to a Option[String], not a String). So there's nothing gained over this:
l match {
case A() => "A"
case B(sb) => "B(" + sb + ")"
case C(s...
A simple explanation of Naive Bayes Classification
...d be Democrats or Republicans. They are also either male or female.
If we select one senator completely randomly, what is the probability that this person is a female Democrat? Conditional Probability can help us answer that.
Probability of (Democrat and Female Senator)= Prob(Senator is Democrat) ...
Example of multipart/form-data
... > a.html
Run:
nc -l localhost 8000
Open the HTML on your browser, select the files and click on submit and check the terminal.
nc prints the request received. Firefox sent:
POST / HTTP/1.1
Host: localhost:8000
User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:29.0) Gecko/20100101 Fire...
Parse string to DateTime in C#
...w[] { "dd-MM-yyyy", "dd.MM.yyyy" };
(new[] { "15-01-2019", "15.01.2019" }).Select(s => s.ToDate(patterns)).Dump();
which will convert the dates in the array on the fly by using the patterns and dump them to the console.
Some background about TryParseExact
Finally, Here are some comments ab...
PDO Prepared Inserts multiple rows in single query
... INSERT statements instead of building out as a single string query as the selected answer did. I decided to run a simple test with just two fields and a very basic insert statement:
<?php
require('conn.php');
$fname = 'J';
$lname = 'M';
$time_start = microtime(true);
$stmt = $db->prepare('...
How can I add a third button to an Android Alert Dialog?
...'which' argument contains the index position
// of the selected item
switch (which) {
case 0:
Toast.makeText(context, "clicked 1", 0).show();
break;
case 1:...