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How to check if a stored procedure exists before creating it
...d procedure upon running the script, and some may not. I need to have the missing stored procedures added to the client database, but it doesn't matter how much I try to bend T-SQL syntax, I get
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How do I use valgrind to find memory leaks?
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How to Run Valgrind
Not to insult the OP, but for those who come to this question and are still new to Linux—you might have to install Valgrind on your system.
sudo apt install valgrind # Ubuntu, Debian, etc.
sudo yum install valgrind # RHEL, CentOS, Fedora, etc.
Valgrind is readily usab...
Select N random elements from a List in C#
I need a quick algorithm to select 5 random elements from a generic list. For example, I'd like to get 5 random elements from a List<string> .
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Getting number of elements in an iterator in Python
Is there an efficient way to know how many elements are in an iterator in Python, in general, without iterating through each and counting?
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What is the logic behind the “using” keyword in C++?
What is the logic behind the "using" keyword in C++?
1 Answer
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Mercurial stuck “waiting for lock”
...store/lock)
When deleting the lock file, you must make sure nothing else is accessing the repository. (If the lock is a string of zeros or blank, this is almost certainly true).
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How to become an OpenCart guru? [closed]
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OpenCart 1.5.X developer quick start guide for beginners
This guide is written for developers already familiar with PHP, OOP and the MVC architecture
In the following, you'll see examples for the catalog side of the cart. The admin side is identical in function with the exception of...
How many GCC optimization levels are there?
...hough there are some that mean the same thing.
The original version of this answer stated there were 7 options. GCC has since added -Og to bring the total to 8
From the man page:
-O (Same as -O1)
-O0 (do no optimization, the default if no optimization level is specified)
-O1 (optimiz...
Retrieve the position (X,Y) of an HTML element relative to the browser window
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The correct approach is to use element.getBoundingClientRect():
var rect = element.getBoundingClientRect();
console.log(rect.top, rect.right, rect.bottom, rect.left);
Internet Explorer has supported this since as long as you are likely to care...
JavaScript closure inside loops – simple practical example
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Well, the problem is that the variable i, within each of your anonymous functions, is bound to the same variable outside of the function.
ES6 solution: let
ECMAScript 6 (ES6) introduces new let and const keywords that are scoped differently th...