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What are the differences between double-dot “..” and triple-dot “…” in Git diff commit ranges?
...tly different things when used in a command such as git log that expects a set of commits as one or more arguments. (These commands all end up using git rev-list to parse a list of commits from their arguments.)
The meaning of .. and ... for git log can be shown graphically as below:
So, git rev-l...
Cross cutting concern example
...needed where only authentic user can enter into the application with right set of privileges. We need to know how your application performs then we need to do profiling.
In case application is used by international users(with their own localized language), then we need to support the same in applic...
PHP & mySQL: Year 2038 Bug: What is it? How to solve it?
...
# update all rows by populating your new DATETIME field
UPDATE `myTable` SET `myTimestamp` = FROM_UNIXTIME(temp_myTimestamp);
# remove the temporary column
ALTER TABLE `myTable` DROP `temp_myTimestamp`
Resources
Year 2038 Problem (Wikipedia)
The Internet Will End in 30 Years
...
How to force the browser to reload cached CSS/JS files?
...he file to determine whether it has a copy in cache. If your server isn't set up to do anything with the query string, it will be ignored, but the name will look like a new file to the browser.
On the other hand, if you're developing a website, you don't want to change the version number every tim...
Difference between Service, Async Task & Thread?
...nTask getting trigger again. You can use Fragments to retain AsyncTask and set setRetainInstance(true) on the Fragment that will help you.
– Alejandro Serret
Sep 12 '17 at 18:38
...
Microsecond timing in JavaScript
...passes, you'll have full dynamic recompilation, and eventually the counter settles to something very accurate. Make sure that all busy loops is exactly the same function for all cases, so that differences in busy loops do not lead to differences. Make sure all lines of code are executed several ti...
Implementing IDisposable correctly
...sed.
public class User : IDisposable
{
public int id { get; protected set; }
public string name { get; protected set; }
public string pass { get; protected set; }
public User(int userID)
{
id = userID;
}
public User(string Username, string Password)
{
...
COUNT(*) vs. COUNT(1) vs. COUNT(pk): which is better? [duplicate]
...ks on Postgresql, it's clear that you want to count the cardinality of the set
-- count the subordinates that belongs to boss
SELECT boss.boss_id, COUNT(subordinate.*)
FROM boss
LEFT JOIN subordinate on subordinate.boss_id = boss.boss_id
GROUP BY boss.id
Another way to count the cardinality of th...
How to bind 'touchstart' and 'click' events but not respond to both?
...g.bind('touchstart click', function(){
if (!flag) {
flag = true;
setTimeout(function(){ flag = false; }, 100);
// do something
}
return false
});
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Why shouldn't I use mysql_* functions in PHP?
...lude: (from PHP manual).
Stored procedures (can't handle multiple result sets)
Prepared statements
Encryption (SSL)
Compression
Full Charset support
Reason to not use mysql_* function:
Not under active development
Removed as of PHP 7
Lacks an OO interface
Doesn't support non-blocking, asynchro...