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Random record from MongoDB
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Do a count of all records, generate a random number between 0 and the count, and then do:
db.yourCollection.find().limit(-1).skip(yourRandomNumber).next()
share
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How to write file if parent folder doesn't exist?
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If the whole path already exists, mkdirp is a noop. Otherwise it creates all missing directories for you.
This module does what you want: https://npmjs.org/package/writefile . Got it when googling for "writefile mkdirp". This module returns a promise instead of taking a callback, so be sure to r...
Proper SCSS Asset Structure in Rails
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The problem with CSS is, you do not want to automatically add all files.
The order of which your sheets are loaded and processed by the browser is essential. So you will always end up explicitly importing all your css.
As an example, lets say you have a normalize.css sheet, t...
How does HTTP file upload work?
...?) always threaded so that they can handle concurrent connections. Essentially, the daemon process that's listening on port 80 immediately hands off the task of serving to another thread/process in order that it can return to listening for another connection; even if two incoming connections arrive...
How would you count occurrences of a string (actually a char) within a string?
...nsion methods on the string class. I guess they figured devs wouldn't want all those extension methods to show up on the string class. Probably a wise decision.
– Judah Gabriel Himango
Feb 15 '09 at 23:27
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Difference between Java Enumeration and Iterator
...n Enumeration:
Iterators differ from
enumerations in two ways:
Iterators allow the caller to remove elements from the underlying
collection during the iteration with
well-defined semantics.
Method names have been improved.
The bottom line is, both Enumeration and Iterator will give successive el...
Read/Write String from/to a File in Android
... I think, closing streams should be in the final block as in @SharkAlley answer
– Yurii K
Jul 29 '15 at 14:41
4
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Disable developer mode extensions pop up in Chrome
... to chrome://extensions, check Developer mode and click Pack extension
Install the extension by dragging and dropping the .crx file into the chrome://extensions page.
You'll get an "Unsupported extensions disabled" popup if you try restarting Chrome at this point.
Then for Windows 7 or Windows 8:...
Generating random whole numbers in JavaScript in a specific range?
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It's only doing that because it's calling floor, which rounds down.
– Josh Stodola
Oct 6 '09 at 20:17
6
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Convert a char to upper case using regular expressions (EditPad Pro)
...m using EditPad Pro (however I am willing to use any other tool that would allow me to do this, as long as it is free to try, since I only need to do this once).
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