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What does placing a @ in front of a C# variable name do? [duplicate]
...sy to write, for example, a fully qualified file name:
@"c:\Docs\Source\a.txt" // rather than "c:\\Docs\\Source\\a.txt"
To include a double quotation mark in an @-quoted string, double it:
@"""Ahoy!"" cried the captain." // "Ahoy!" cried the captain.
Another use of the @ symbol is to use refe...
Strip all non-numeric characters from string in JavaScript
...gular / Ionic / VueJS -- I just came up with a simple method of:
stripNaN(txt: any) {
return txt.toString().replace(/[^a-zA-Z0-9]/g, "");
}
Usage on the view:
<a [href]="'tel:'+stripNaN(single.meta['phone'])" [innerHTML]="stripNaN(single.meta['phone'])"></a>
...
Multiple commands in gdb separated by some sort of delimiter ';'?
...uses GDB to start actually logging; by default, the log file is called gdb.txt.
printf "\nwhatis a\nwhatis b\nwhatis c\n"
Our 3 whatis requests, entered on a single line as promised! Separating the commands, before the first, and after the last is \n.
set logging off
Done writing to gdb.txt...
Launching an application (.EXE) from C#?
...Check out this article on how to use it.
Process.Start("notepad", "readme.txt");
string winpath = Environment.GetEnvironmentVariable("windir");
string path = System.IO.Path.GetDirectoryName(
System.Windows.Forms.Application.ExecutablePath);
Process.Start(winpath + @"\Microsoft.NET\F...
how to read all files inside particular folder
...;
StringBuilder sb = new StringBuilder();
foreach (string txtName in Directory.GetFiles(@"D:\Links","*.txt"))
{
using (StreamReader sr = new StreamReader(txtName))
{
sb.AppendLine(txtName.ToString());
sb.AppendLine("= = = = = =");
...
Define preprocessor macro through CMake?
... In cmake 3.10.2, add_compile_definitions throws CMake Error at CMakeLists.txt:6 (add_compile_definitions): Unknown CMake command "add_compile_definitions".. Had to use add_compile_options(-D <your-def>) instead.
– code_dredd
Jul 22 '18 at 9:25
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Count number of occurrences of a pattern in a file (even on same line)
...
grep -o foo a.txt b.txt | sort | uniq -c works just fine (with GNU grep): gist.github.com/hudolejev/81a05791f38cbacfd4de3ee3b44eb4f8
– hudolejev
Apr 13 '17 at 8:00
...
Javascript - How to extract filename from a file input control
...he caller."
Mozilla Developer Network
Example:
from: "/home/user/file.txt".split(/(\\|\/)/g).pop()
you get: "file.txt"
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Getting the count of unique values in a column in bash
... example):
awk -F '\t' '{print $2}' * | sort | uniq -c | sort -nr
fileA.txt
z z a
a b c
w d e
fileB.txt
t r e
z d a
a g c
fileC.txt
z r a
v d c
a m c
Result:
3 d
2 r
1 z
1 m
1 g
1 b
...
Delete all lines beginning with a # from a file
...
For linux noobs like me: sed '/^#/ d' < inputFile.txt > outputFile.txt
– Neil McGuigan
Jul 28 '14 at 19:12
54
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