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How to check if an array field contains a unique value or another array in MongoDB?
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db.blogpost.find({ 'tags' : 'tag1'}); //1
db.blogpost.find({ 'tags' : { $all : [ 'tag1', 'tag2' ] }}); //2
db.blogpost.find({ 'tags' : { $in : [ 'tag3', 'tag4' ] }}); //3
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How to make a SIMPLE C++ Makefile
...o write a simple makefile
What is Make? And Why Should I Care?
The tool called Make is a build dependency manager. That is, it takes care of knowing what commands need to be executed in what order to take your software project from a collection of source files, object files, libraries, headers, et...
Windows 8.1 / Windows 10 breaks my ASP.NET / IIS : “Service unavailable”
With Windows 8.1 finally released to MSDN/Technet today I came across the following issue running my ASP.NET application after doing an in place upgrade with Win 8.1 RTM:
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Notepad++ - How can I replace blank lines [duplicate]
...rchMode
Put \r\n\r\n in Find What
Put \r\n in ReplaceWith
Click on Replace All
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Moving Git repository content to another repository preserving history
...d r1remote **url-of-repo1**
git fetch r1remote
git merge r1remote/master --allow-unrelated-histories
git remote rm r1remote
After that repo2/master will contain everything from repo2/master and repo1/master, and will also have the history of both of them.
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How to iterate over arguments in a Bash script
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Use "$@" to represent all the arguments:
for var in "$@"
do
echo "$var"
done
This will iterate over each argument and print it out on a separate line. $@ behaves like $* except that when quoted the arguments are broken up properly if there...
How to enable assembly bind failure logging (Fusion) in .NET
.... Note I configured this in a clean environment where I didn't want to install SDKs and the like.
– Michhes
Jul 30 '10 at 2:21
5
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When should we use intern method of String on String literals
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Java automatically interns String literals. This means that in many cases, the == operator appears to work for Strings in the same way that it does for ints or other primitive values.
Since interning is automatic for String literals, the ...
Get the name of an object's type
...nstance (2).constructor.name is "Number".
But here are various hacks that all fall down in one way or another:
Here is a hack that will do what you need - be aware that it modifies the Object's prototype, something people frown upon (usually for good reason)
Object.prototype.getName = function() { ...
IntelliJ: Viewing diff of all changed files between local and a git commit/branch
...way to review code because you can make changes in your local version with all the capabilities of the IntelliJ code editor (refactoring, completion, etc).
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