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Cause of a process being a deadlock victim
I have a process with a Select which takes a long time to finish, on the order of 5 to 10 minutes. I am currently not using NOLOCK as a hint to the MS SQL database engine. At the same time we have another process doing updates and inserts into the same database and same tables. The first pr...
MySQL select one column DISTINCT, with corresponding other columns
I want to select DISTINCT results from the FirstName column, but I need the corresponding ID and LastName .
12 Answe...
Where does Visual Studio look for C++ header files?
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Visual Studio looks for headers in this order:
In the current source directory.
In the Additional Include Directories in the project properties (Project -> [project name] Properties, under C/C++ | General).
In the Visual ...
Why is subtracting these two times (in 1927) giving a strange result?
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It's a time zone change on December 31st in Shanghai.
See this page for details of 1927 in Shanghai. Basically at midnight at the end of 1927, the clocks went back 5 minutes and 52 seconds. So "1927-12-31 23:54:08" actually happened twice, and it looks like Java is parsing it as the l...
Using unset vs. setting a variable to empty
...g to test the variable.
I will add that my preferred way of testing if it is set is:
[[ -n $var ]] # True if the length of $var is non-zero
or
[[ -z $var ]] # True if zero length
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How do I keep track of pip-installed packages in an Anaconda (Conda) environment?
I've installed and have been using the Anaconda Python distribution, and I have started using the Anaconda (Conda) environment. I can use the standard conda install... command to put packages from the distribution into my environments, but to use anything outside (i.e. Flask-WTF, flask-sqlalchem...
jquery disable form submit on enter
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If keyCode is not caught, catch which:
$('#formid').on('keyup keypress', function(e) {
var keyCode = e.keyCode || e.which;
if (keyCode === 13) {
e.preventDefault();
return false;
}
});
EDIT: missed it, it's better to u...
Rails: call another controller action from a controller
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edited Dec 4 '13 at 14:36
Yan Foto
8,41544 gold ba...
How to check if a string is a valid hex color representation?
...lowing:
/^#([0-9A-F]{3}){1,2}$/i.test('#ABC')
The only difference here is that
[0-9A-F]{6}
is replaced with
([0-9A-F]{3}){1,2}
This means that instead of matching exactly 6 characters, it will match exactly 3 characters, but 1 or 2 times. Allowing ABC and AABBCC, but not ABCD
...
Spring Test & Security: How to mock authentication?
...des it with @WithMockUser, @WithUserDetails and @WithSecurityContext, in this artifact:
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<version>4.2.2.RELEASE</version>
<scope>t...