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What are the main performance differences between varchar and nvarchar SQL Server data types?
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Always use nvarchar.
You may never need the double-byte characters for most applications. However, if you need to support double-byte languages and you only have single-byte support in your database schema it's really expensive to go back and modify throughout your applicati...
How would you count occurrences of a string (actually a char) within a string?
...ce)
if (c == '/') count++;
Has to be faster than the source.Replace() by itself.
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Syntax highlighting/colorizing cat
... What people forget to mention is that bat stays in interactive mode by default. For it to behave more like cat, use it with -pp argument. An alias like alias cat="bat -pp" is propably what people are looking for.
– Canella
Sep 13 '19 at 8:24
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Hide separator line on one UITableViewCell
... When your iDevice is iPad and cell is used AutoLayout, the value returned by "cell.bounds.size.width" maybe not equal to actual cell's width. So I always use "tableView.frame.size.width" instead of "cell.bounds.size.width".
– Veight Zhou
Feb 1 '15 at 5:55
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Shell Script: Execute a python program from within a shell script
.... Python 3 may be the default python runtime, or may not be. You can check by running python --version, and you can enforce the version with python3 hello.py.
– Jean-Bernard Jansen
Dec 16 '16 at 10:58
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How to make a copy of a file in android?
...eam out = new FileOutputStream(dst);
try {
// Transfer bytes from in to out
byte[] buf = new byte[1024];
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
} finally {
out.cl...
How can I run a program from a batch file without leaving the console open after the program starts?
...ainForm
You can customize the start command as you want for your project, by following the proper syntax:
Syntax
START "title" [/Dpath] [options] "command" [parameters]
Key:
title : Text for the CMD window title bar (required)
path : Starting directory
command : The c...
Find html label associated with a given input
... the label from the actual form element:
var labels = document.getElementsByTagName('LABEL');
for (var i = 0; i < labels.length; i++) {
if (labels[i].htmlFor != '') {
var elem = document.getElementById(labels[i].htmlFor);
if (elem)
elem.label = labels[i]; ...
Submit form using a button outside the tag
...e="submit" form="frmFoo" onclick="!this.form && document.getElementById('myform').submit()">
– romaricdrigon
Feb 6 '19 at 10:04
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How to get an MD5 checksum in PowerShell
...Encoding
$hash = [System.BitConverter]::ToString($md5.ComputeHash($utf8.GetBytes($someString)))
If the content is a file:
$someFilePath = "C:\foo.txt"
$md5 = New-Object -TypeName System.Security.Cryptography.MD5CryptoServiceProvider
$hash = [System.BitConverter]::ToString($md5.ComputeHash([System...