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How to turn on front flash light programmatically in Android?
... true if a flash is available, false if not.
See:http://developer.android.com/reference/android/content/pm/PackageManager.html for more information.
For turning on/off flashlight:
I googled out and got this about android.permission.FLASHLIGHT. Android manifests' permission looks promising:
<...
Should I use px or rem value units in my CSS? [closed]
I am designing a new website and I want it to be compatible with as much browsers and browser settings as possible. I am trying to decide what unit of measurement I should use for the sizes of my fonts and elements, but am unable to find a conclusive answer.
...
How to send a message to a particular client with socket.io
...should be stored in an object like this:
var users = {
'userA@example.com': [socket object],
'userB@example.com': [socket object],
'userC@example.com': [socket object]
}
On the client, emit an object to the server with the following data:
{
to:[the other receiver's username as a ...
Prefer composition over inheritance?
Why prefer composition over inheritance? What trade-offs are there for each approach? When should you choose inheritance over composition?
...
What is the difference between 'git pull' and 'git fetch'?
... fetch periodically in a cron job in the background (although I wouldn't recommend doing this).
A git pull is what you would do to bring a local branch up-to-date with its remote version, while also updating your other remote-tracking branches.
From the Git documentation for git pull:
In its defaul...
Uninstall all installed gems, in OSX?
... -worked for me
– lesyk
May 28 '12 at 13:10
5
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What does yield mean in PHP?
...
What is a generator function?
A generator function is effectively a more compact and efficient way to write an Iterator. It allows you to define a function (your xrange) that will calculate and return values while you are looping over it:
foreach (xrange(1, 10) as $key => $value) {
echo "$...
How to import Google Web Font in CSS file?
...
Use the @import method:
@import url('https://fonts.googleapis.com/css?family=Open+Sans&display=swap');
Obviously, "Open Sans" (Open+Sans) is the font that is imported. So replace it with yours. If the font's name has multiple words, URL-encode it by adding a + sign between each wo...
Python class inherits object
... for a class declaration to inherit from object?
In Python 3, apart from compatibility between Python 2 and 3, no reason. In Python 2, many reasons.
Python 2.x story:
In Python 2.x (from 2.2 onwards) there's two styles of classes depending on the presence or absence of object as a base-class:...
Generating random integer from a range
...ed non-uniform distributed numbers regardless the quality of rand(). For a comprehensive test of the quality of this method, please read this.
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