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Input placeholders for Internet Explorer
HTML5 introduced the placeholder attribute on input elements, which allows to display a greyed-out default text.
17 Ans...
How do I make Git ignore file mode (chmod) changes?
...it handles the
executable bit correctly and this variable is automatically
set as necessary.
A repository, however, may be on a filesystem that handles
the filemode correctly, and this variable is set to true when
created, but later may be made accessible from another
envir...
Enable SQL Server Broker taking too long
... long as there are transactions pending. Rollback immediate will terminate all of these.
– libjup
Apr 27 '14 at 13:33
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bash: mkvirtualenv: command not found
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Solution 1:
For some reason, virtualenvwrapper.sh installed in /usr/bin/virtualenvwrapper.sh, instead of under /usr/local/bin.
The following in my .bash_profile works...
source "/usr/bin/virtualenvwrapper.sh"
export WORKON_HOME="/opt/virtual_env/"
My install seems to work fi...
How to change MySQL data directory?
...r/mysql
# Stop MySQL before copying over files
service mysql stop
# Copy all files in default directory, to new one, retaining perms (-p)
cp -rp /var/lib/mysql/* /new/dir/for/mysql/
Edit the /etc/my.cnf file, and under [mysqld] add this line:
datadir=/new/dir/for/mysql/
If you are using CageF...
What is the difference between properties and attributes in HTML?
...attribute. Instead, it's the current value of the input. When the user manually changes the value of the input box, the value property will reflect this change. So if the user inputs "John" into the input box, then:
theInput.value // returns "John"
whereas:
theInput.getAttribute('value') // retu...
How to reorder data.table columns (without copying)
... 2 2
# [3,] 0.3297416 1 3
From ?setcolorder:
In data.table parlance, all set* functions change their input by reference. That is, no copy is made at all, other than temporary working memory, which is as large as one column.
so should be pretty efficient. See ?setcolorder for details.
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Easy way of running the same junit test over and over?
...for some simple way to run JUnit 4.x tests several times in a row automatically using Eclipse.
12 Answers
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Why cast an unused function parameter value to void?
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@Benoit what does casting to void actually do? Is its only function to show the compiler that you're intentionally ignoring something or does (void) actually do something and when the compiler sees it, it'll just count it as having done something with the variabl...
Can constructors be async?
...her “fire and forget” void, or Task.
If the constructor of type T actually returned Task<T>, that would be very confusing, I think.
If the async constructor behaved the same way as an async void method, that kind of breaks what constructor is meant to be. After constructor returns, you s...