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How to change the output color of echo in Linux
...aracter sequences that are interpreted by the terminal as having a special meaning. They will not be shown themselves. Note that they can still be saved into files or processed as input by programs other than the terminal.
Command substitution
It may be more convenient to insert tput's output dire...
.append(), prepend(), .after() and .before()
...
See:
.append() puts data inside an element at last index and
.prepend() puts the prepending elem at first index
suppose:
<div class='a'> //<---you want div c to append in this
<div class='b'>b</div>
</div>
when .append() e...
Share cookie between subdomain and domain
...ubsub.subdomain.mydomain.com.
In RFC 2109, a domain without a leading dot meant that it could not be used on subdomains, and only a leading dot (.mydomain.com) would allow it to be used across multiple subdomains (but not the top-level domain, so what you ask was not possible in the older spec).
H...
structure vs class in swift language
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struct are value types. It means that if you copy the instance of the structure to another variable, it's just copied to the variable.
Example for Value Type
struct Resolution {
var width = 2
var height = 3
}
let hd = Resolution(width: 1920,...
How do I break out of a loop in Scala?
...Just because they're typically used to support exception handling does not mean they can only be used for exception handling. Returning to a defined location from within a closure is just like throwing an exception in terms of control flow. No surprise, then, that this is the mechanism that is use...
Convert char to int in C and C++
... 9 */
Explanation:
a - '0' is equivalent to ((int)a) - ((int)'0'), which means the ascii values of the characters are subtracted from each other. Since 0 comes directly before 1 in the ascii table (and so on until 9), the difference between the two gives the number that the character a represents....
proper name for python * operator?
...", and I think most people from those communities will figure out what you mean if you call it that.
The Python tutorial uses the phrase "unpacking argument lists", which is long and descriptive. I haven't heard any other particular name for it in Python.
...
What is the best way to detect a mobile device?
...ead of using jQuery you can use simple JavaScript to detect it:
if( /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent) ) {
// some code..
}
Or you can combine them both to make it more accessible through jQuery...
$.browser.device = (/android|webos|iphone...
Android selector & text color
...xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true"
android:color="#000000" /> <!-- pressed -->
<item android:state_focused="true"
android:colo...
String isNullOrEmpty in Java? [duplicate]
... between the distinction between blank and empty, so I looked it up; blank means, "", null, and any amount of whitespace; empty is just "" and null.
– James McMahon
Feb 16 '10 at 15:50
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