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How to send an object from one Android Activity to another using Intents?
..., a simple example for how to implement is:
// simple class that just has one member property as an example
public class MyParcelable implements Parcelable {
private int mData;
/* everything below here is for implementing Parcelable */
// 99.9% of the time you can just ignore this
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What happens when a duplicate key is put into a HashMap?
...Java returns any previous value associated with the given key (or null if none present), so you can determine what was there and maintain a reference if necessary.
More information here: HashMap Doc
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How do you remove all the options of a select box and then add one option and select it with jQuery?
...g core jQuery, how do you remove all the options of a select box, then add one option and select it?
24 Answers
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How do I use shell variables in an awk script?
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Getting shell variables into awk
may be done in several ways. Some are better than others. This should cover most of them. If you have a comment, please leave below. ...
Declaring pointers; asterisk on the left or right of the space between the type and name? [duplicate
...This applies to C and C++, by the way.) People seem to declare pointers in one of two ways, and I have no idea which one is correct, of if it even matters.
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Including one C source file in another?
...ry pessimistic about anything declared extern.
If you put everything into one C source module, you get -
Performance & code size improvements - function calls will be inlined in many cases. Even without inlining, the compiler has opportunities to produce more efficient code.
Link level data &...
Troubleshooting “Illegal mix of collations” error in mysql
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TL;DR
Either change the collation of one (or both) of the strings so that they match, or else add a COLLATE clause to your expression.
What is this "collation" stuff anyway?
As documented under Character Sets and Collations in General:
A character set i...
How to make an Android Spinner with initial text “Select One”?
...lly (when the user has not made a selection yet) displays the text "Select One". When the user clicks the spinner, the list of items is displayed and the user selects one of the options. After the user has made a selection, the selected item is displayed in the Spinner instead of "Select One".
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Why does Java allow us to compile a class with a name different than the file name?
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The rationale is to allow more than one top-level class per .java file.
Many classes—such as event listeners—are of local use only and the earliest versions of Java did not support nested classes. Without this relaxation of the "filename = class name" rule...
Replace a value in a data frame based on a conditional (`if`) statement
...he factor level b to the factor nm. diliop's version is in fact the better one if you want to work with characters, not factors. (Always think about the type your variables have first!)
– Thilo
Apr 28 '11 at 20:18
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