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Unix tail equivalent command in Windows Powershell
... click on the file in Windows Explorer, suddenly PowerShell "wakes up" and catches up the remaining lines. Is this a bug?
– JoshL
Oct 9 '12 at 22:32
|
...
Is there a “goto” statement in bash?
...nlike most of the methods described above).
#!/bin/bash
echo "Run this"
cat >/dev/null <<GOTO_1
echo "Don't run this"
GOTO_1
echo "Also run this"
cat >/dev/null <<GOTO_2
echo "Don't run this either"
GOTO_2
echo "Yet more code I want to run"
To put your script back to no...
Best practices with STDIN in Ruby?
...e Ruby.
So, in Ruby, a simple no-bells implementation of the Unix command cat would be:
#!/usr/bin/env ruby
puts ARGF.read
ARGF is your friend when it comes to input; it is a virtual file that gets all input from named files or all from STDIN.
ARGF.each_with_index do |line, idx|
print ARGF....
Naming returned columns in Pandas aggregate function? [duplicate]
...
Note that this syntax will be deprecated in future versions of pandas. Details are in the 0.20 changelog, which I summarized in my answer.
– joelostblom
May 10 '17 at 15:43
...
How to inherit from a class in javascript?
... used with the new operator:
var subInstance = new Sub();
Function application or "constructor chaining":
function Super () {
this.member1 = 'superMember1';
this.member2 = 'superMember2';
}
function Sub() {
Super.apply(this, arguments);
this.member3 = 'subMember3';
}
This approach sh...
How to check if any flags of a flag combination are set?
...d :
using System;
[Flags] public enum Pet {
None = 0,
Dog = 1,
Cat = 2,
Bird = 4,
Rabbit = 8,
Other = 16
}
public class Example
{
public static void Main()
{
// Define three families: one without pets, one with dog + cat and one with a dog only
Pet[] petsInFam...
Maximum number of threads per process in Linux?
...esses with a shared address space on Linux) which you can view like this:
cat /proc/sys/kernel/threads-max
The default is the number of memory pages/4. You can increase this like:
echo 100000 > /proc/sys/kernel/threads-max
There is also a limit on the number of processes (and hence threads...
How to redirect output with subprocess in Python?
...feeling I should've been using subprocess instead since it's a library dedicated to this task, although since I'm doing this just for myself I'll be fine using os.system this time.
– catatemypythoncode
Feb 11 '11 at 2:53
...
Coloring white space in git-diff's output
...
Of course, you can also do git diff | cat -A | less -S if you're desperate, but in addition to the carriage returns, the cat will also display any colour highlighting escape codes literally.
– Paul Whittaker
Jul 16 '12 at 17...
Most efficient method to groupby on an array of objects
...// example usage
const pets = [
{type:"Dog", name:"Spot"},
{type:"Cat", name:"Tiger"},
{type:"Dog", name:"Rover"},
{type:"Cat", name:"Leo"}
];
const grouped = groupBy(pets, pet => pet.type);
console.log(grouped.get("Dog")); // -> [{type:"Dog", name:"Spot"}, {type:"D...