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Get current time in seconds since the Epoch on Linux, Bash
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the date manpge should be changed from %s seconds since 1970-01-01 00:00:00 UTC to %s seconds since the epoch, 1970-01-01 00:00:00 UTC because I missed it in there.
– devin
Nov 18 '11 at 19:17
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Fade In Fade Out Android Animation in Java
I want to have a 2 second animation of an ImageView that spends 1000ms fading in and then 1000ms fading out.
11 Answers
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When to use virtual destructors?
...n delete b], if the static type of the
object to be deleted is different from its dynamic type, the static
type shall be a base class of the dynamic type of the object to be
deleted and the static type shall have a virtual destructor or the
behavior is undefined.
In most implementations, t...
What is __pycache__?
From what I understand, a cache is an encrypted file of similar files.
10 Answers
10
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What is an Intent in Android?
...n; in other words,
a messaging object you can use to request an action from another app component
An Intent is basically a message to say you did or want something to happen. Depending on the intent, apps or the OS might be listening for it and will react accordingly. Think of it as a blast em...
How do you check if a selector matches something in jQuery? [duplicate]
...e slower- you can do:
jQuery.fn.exists = function(){return this.length>0;}
Then in your code you can use
if ($(selector).exists()) {
// Do something
}
As answered here
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Fastest way(s) to move the cursor on a terminal command line?
...inting the current line at the top.
Kill and yank
Ctrl-k Kill the text from the current cursor position to the end of the line.
M-d Kill from the cursor to the end of the current word, or, if between words, to the end of the next word. Word boundaries are the same as those used by M-f.
M-[DEL]...
tomcat - CATALINA_BASE and CATALINA_HOME variables
...t on Ubuntu. It properly separates the Tomcat software (in $CATALINA_HOME) from the Tomcat instance (in $CATALINA_BASE).
– reinierpost
Jul 8 '16 at 8:52
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uppercase first character in a variable with bash
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foo="$(tr '[:lower:]' '[:upper:]' <<< ${foo:0:1})${foo:1}"
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Sequelize.js: how to use migrations and sync
...sad that there appears to be no way to automatically make these migrations from the diffs between model versions.
– tremby
Apr 29 '15 at 21:38
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