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How to get RelativeLayout working with merge and include?
...t container, but does so in order to assist addressing & scoping identically named Views within Justin's includes
Each would have to have a
unique parent container, and you would
call findViewById() on that container
(ViewGroup) rather than on the
Activity.
In fact, you also must ...
For loop for HTMLCollection elements
...ctions. However, you can use some Array.prototype methods, as long as you .call() them and pass in the NodeList or HTMLCollection as this.
So consider the following as an alternative to jfriend00's for loop:
var list= document.getElementsByClassName("events");
[].forEach.call(list, function(el) {
...
Objective-C: difference between id and void *
...mpting to invoke a method on an id type will only warn if the method being called has not been declared in any of the @interface declarations seen by the compiler.
Thus, one should never refer to an object as a void *. Similarly, one should avoid using an id typed variable to refer to an object....
How to perform Callbacks in Objective-C
How to perform call back functions in Objective-C?
5 Answers
5
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When to use next() and return next() in Node.js
...e return next() is to ensure that the execution stops after triggering the callback.
If you don't do it, you risk triggering the callback a second time later, which usually has devastating results. Your code is fine as it is, but I would rewrite it as:
app.get('/users/:id?', function(req, res, nex...
How can you make a custom keyboard in Android?
...d.
1. Start a new Android project
I named my project "Custom Keyboard". Call it whatever you want. There is nothing else special here. I will just leave the MainActivity and "Hello World!" layout as it is.
2. Add the layout files
Add the following two files to your app's res/layout folder:
ke...
How to determine if a record is just created or updated in after_save
...
I was looking to use this for an after_save callback.
A simpler solution is to use id_changed? (since it won't change on update) or even created_at_changed? if timestamp columns are present.
Update: As @mitsy points out, if this check is needed outside of callbacks t...
Call UrlHelper in models in ASP.NET MVC
I need to generate some URLs in a model in ASP.NET MVC. I'd like to call something like UrlHelper.Action() which uses the routes to generate the URL. I don't mind filling the usual blanks, like the hostname, scheme and so on.
...
querySelector and querySelectorAll vs getElementsByClassName and getElementById in JavaScript
...tain the elements that fulfilled the selector at the moment the method was called.
A variable generated with getElementsByClassName will contain the elements that fulfilled the selector when it is used (that may be different from the moment the method was called).
For example, notice how even if y...
How exactly does the android:onClick XML attribute differ from setOnClickListener?
... -->
In the background, Android does nothing else than the Java code, calling your method on a click event.
Note that with the XML above, Android will look for the onClick method myFancyMethod() only in the current Activity. This is important to remember if you are using fragments, since even ...