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Windows batch file file download from a URL
....example.com/package.zip -OutFile package.zip
From a batch file they are called:
powershell -Command "(New-Object Net.WebClient).DownloadFile('http://www.example.com/package.zip', 'package.zip')"
powershell -Command "Invoke-WebRequest http://www.example.com/package.zip -OutFile package.zip"
(Po...
How to get CRON to call in the correct PATHs
I'm trying to get cron to call in the correct PATHs. When I run a Python script from shell the script runs fine as it uses the PATHs set in bashrc but when I use cron all the PATHs are not used from bashrc. Is there a file I can enter the PATHs into for cron like bashrc or a way to call the PATHs fr...
How to generate a random number in C++?
...
The most fundamental problem of your test application is that you call srand once and then call rand one time and exit.
The whole point of srand function is to initialize the sequence of pseudo-random numbers with a random seed.
It means that if you pass the same value to srand in two diffe...
How to create a private class method?
...n that private is NOT an access/visibility modifier, but actually a method call (with the class as its recipient) as discussed here... there's no such thing as "a private section" in Ruby.
To define private instance methods, you call private on the instance's class to set the default visibility for...
What is the $? (dollar question mark) variable in shell scripting? [duplicate]
... In bash, the return value of a program is stored in a special variable
called $?.
This illustrates how to capture the return value of a program, I
assume that the directory dada does not exist. (This was also
suggested by mike)
#!/bin/bash
cd /dada &> /dev/null
...
What are rvalues, lvalues, xvalues, glvalues, and prvalues?
...imization we should probably embrace them.
Quoting n3055:
An lvalue (so-called, historically,
because lvalues could appear on the
left-hand side of an assignment
expression) designates a function or
an object. [Example: If E is an
expression of pointer type, then *E
is an lvalue expression ref...
Link to “pin it” on pinterest without generating a button
...
The Pin It widget builder business.pinterest.com/widget-builder/#do_pin_it_button is also useful for getting some sample code that you can then customise programatically.
– William Denniss
Mar 18 '1...
How can I pass a parameter to a setTimeout() callback?
...topicId gets changed after the timeout was set, but before the function is called?
– pilau
Nov 2 '12 at 0:19
...
Check play state of AVPlayer
... selector:@selector(<#The selector name#>)
name:AVPlayerItemDidPlayToEndTimeNotification
object:<#A player item#>];
And to track playing you can:
"track changes in the position of the playhead in an AVPlayer object" by using addPeriodicTimeObserverForInterval:queue:usin...
What is the overhead of creating a new HttpClient per call in a WebAPI client?
...ent?
Is it better to have one instance of the HttpClient for multiple calls?
7 Answers
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