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Instance v state variables in react.js
...rallen said, you should also remember to handle the component unmounting before your handleLeave is called.
React.createClass({
handleEnter: function () {
// Open a new one after a delay
this._timeout = setTimeout(function () {
this.openWidget();
}.bind(...
MongoDB drop every database
...then execute it in the mongoconsole.
var dbs = db.getMongo().getDBNames()
for(var i in dbs){
db = db.getMongo().getDB( dbs[i] );
print( "dropping db " + db.getName() );
db.dropDatabase();
}
save it to dropall.js and then execute:
mongo dropall.js
...
Why is string concatenation faster than array join?
...ion, so Safari, Opera, Chrome, and Internet Explorer 8 also show better performance using the plus operator. Internet Explorer prior to version 8 didn’t have such an optimization, and so the array technique is always faster than the plus operator.
— Writing Efficient JavaScript: Chapter 7 ...
How do I get a UTC Timestamp in JavaScript?
...d browser.)
Note that getTime() returns milliseconds, not plain seconds.
For a UTC/Unix timestamp, the following should suffice:
Math.floor((new Date()).getTime() / 1000)
It will factor the current timezone offset into the result. For a string representation, David Ellis' answer works.
To clar...
How to search a string in multiple files and return the names of files in Powershell?
...e | Select-String "dummy" -List | Select Path returns only the first match for each file so may be a little more efficient and avoids the need to group them
– ben
Apr 16 '15 at 15:27
...
Profiling Vim startup time
... in order to better answer your question. Basically, it sums up the timing for each function calls for every plugins, which is not obvious (but important) from the raw vim profile output. Bash, Python, R, Ruby are supported for creating the profiling results.
You will get a result figure like this:...
Find out if string ends with another string in C++
...
@Brandin Because it's a such basic functionality. C++ forces us to reprogram again and again the same functionalities which are provided out-of-the-box in any other modern computer language. The fact that people need to go to stackoverflow to solve this question shows there is a...
How do I remove diacritics (accents) from a string in .NET?
...
I've not used this method, but Michael Kaplan describes a method for doing so in his blog post (with a confusing title) that talks about stripping diacritics: Stripping is an interesting job (aka
On the meaning of meaningless, aka All
Mn characters are non-spacing, but
some are more non-sp...
Comparing two branches in Git? [duplicate]
...
The same syntax works for comparing a branch with a tag or a tag with another tag.
– Daniel Zohar
May 27 '13 at 7:02
58
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Manually map column names with class properties
I am new to the Dapper micro ORM. So far I am able to use it for simple ORM related stuff but I am not able to map the database column names with the class properties.
...