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When exactly are onSaveInstanceState() and onRestoreInstanceState() called?
The following figure (from the official doc ) describes the well-known lifecycle of an Android activity:
5 Answers
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Explicitly calling a default method in Java
...oo();
}
public void bah() {
A.super.foo(); //original foo() from A accessed
C.super.foo(); //original foo() from C accessed
}
}
A and C can both have .foo() methods and the specific default implementation can be chosen or you can use one (or both) as part of your new foo(...
Maximum value for long integer
...mit. The amount of available address space forms a practical limit.
(Taken from this site). See the docs on Numeric Types where you'll see that Long integers have unlimited precision. In Python 2, Integers will automatically switch to longs when they grow beyond their limit:
>>> import sys...
What is the difference between syntax and semantics in programming languages?
...rinted on each one. The rightmost wheel rotates the fastest; when it wraps from 9 back to zero, the wheel to its immediate left advances by one. When this wheel advances from 9 to 0, the one to its left advances, and so on.
– Jeff N
Jul 29 '13 at 19:20
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Difference between Eclipse Europa, Helios, Galileo
...t release. Running the new release (on a Mac) doesn't pick up the settings from the old. I've "started over" my Eclipse setup so many times now, I'm totally fed up using it, to be honest. I must be doing something wrong. :-(
– Ryan H.
Dec 6 '11 at 18:25
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Comparing two java.util.Dates to see if they are in the same day
...
I am actually surprised to see this, but even from a performance standpoint, this SimpleDateFormat method is actually faster than the other one mentioned here using Calendars. On average it takes half the time as the Calendar method. (At least on my system). Kudos!
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Python string class like StringBuilder in C#?
...gs that fulfill similar purposes:
One common way to build large strings from pieces is to grow a list of strings and join it when you are done. This is a frequently-used Python idiom.
To build strings incorporating data with formatting, you would do the formatting separately.
For insertion an...
How to stop a PowerShell script on the first error?
...tell the caller of your script that it has failed. Building on top of Exec from the library Psake, a script that has the structure below will stop on all errors, and is usable as a base template for most scripts.
Set-StrictMode -Version latest
$ErrorActionPreference = "Stop"
# Taken from psake ht...
How can I replace a newline (\n) using sed?
...les and needs to process the whole file to begin the process.
Long answer from the sed FAQ 5.10
5.10. Why can't I match or delete a newline using the \n escape
sequence? Why can't I match 2 or more lines using \n?
The \n will never match the newline at the end-of-line because the
newline is always ...
How can you find the height of text on an HTML canvas?
...of this working, I used this technique in the Carota editor.
Following on from ellisbben's answer, here is an enhanced version to get the ascent and descent from the baseline, i.e. same as tmAscent and tmDescent returned by Win32's GetTextMetric API. This is needed if you want to do a word-wrapped ...