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When should I use std::thread::detach?
...hread-local objects destructed.
Crucially, this means that the stack of those threads is not unwound and thus some destructors are not executed. Depending on the actions those destructors were supposed to undertake, this might be as bad a situation as if the program had crashed or had been killed. ...
What's the difference between disabled=“disabled” and readonly=“readonly” for HTML form input fields
...ide or provide default styling for disabled form elements. (Gray out or emboss text) Internet Explorer
5.5 is particularly nasty about this.
Disabled form elements do not receive focus.
Disabled form elements are skipped in tabbing navigation.
The Read Only Attribute
Not all fo...
How to export a Vagrant virtual machine to transfer it
... Trying to be that clean, foresightful admin... You don't have to put an OS install iso in your git repo do you? Are you suggesting that, for example. using ansible, your repo would contain the Vagrantfile and an ansible playbook. The Vagrantfile would 1. download a basebox from vagrantcloud 2. r...
How to create a CPU spike with a bash command
...
You can also do
dd if=/dev/zero of=/dev/null
To run more of those to put load on more cores, try to fork it:
fulload() { dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null & }; fulload; read; killall dd
Repea...
How to get error message when ifstream open fails
...r between the execution of the f.open and use of errno.
On system with POSIX standard:
errno is thread-local; setting it in one thread does not affect its
value in any other thread.
Edit (thanks to Arne Mertz and other people in the comments):
e.what() seemed at first to be a more C++-...
What is a message pump?
In this thread (posted about a year ago) there is a discussion of problems that can come with running Word in a non-interactive session. The (quite strong) advice given there is not to do so. In one post it is stated "The Office APIs all assume you are running Office in an interactive session on...
How do I set cell value to Date and apply default Excel date format?
...rmats (not just date formats) that Excel knows. I'm sticking with one of those to use as my parameter to the getFormat() method shown in the snippet above.
– Jim Tough
Apr 27 '11 at 12:08
...
How to get just one file from another branch
...y of the repo.
Hence the path/to/app.js used by Jakub in his example.
As Frosty mentions in the comment:
you will only get the most recent state of app.js
But, for git checkout or git show, you can actually reference any revision you want, as illustrated in the SO question "git checkout revision o...
How to jump from Intellij terminal to editor with shortcut
I know that you can jump from almost all windows in Intellij IDEA to the editor window with Esc . In Intellij's terminal window, this does not work. Does anyone know how to do this with a keyboard shortcut? This would be nice since I can jump from my editor to the terminal with Alt + F12 but I ca...
Is there an easy way to check the .NET Framework version?
...ryKey installed_versions = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP");
string[] version_names = installed_versions.GetSubKeyNames();
//version names start with 'v', eg, 'v3.5' which needs to be trimmed off before conversion
double Framework = Convert.ToDouble(ver...