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JavaScript pattern for multiple constructors
...ou pass to it, you'll have to sniff them manually. JavaScript will happily call a function with more or fewer than the declared number of arguments.
function foo(a, b) {
if (b===undefined) // parameter was omitted in call
b= 'some default value';
if (typeof(a)==='string')
t...
Split column at delimiter in data frame [duplicate]
...t;- data.frame(ID=11:13, FOO=c('a|b','b|c','x|y'))
foo <- data.frame(do.call('rbind', strsplit(as.character(df$FOO),'|',fixed=TRUE)))
Or, if you want to replace the columns in the existing data.frame:
within(df, FOO<-data.frame(do.call('rbind', strsplit(as.character(FOO), '|', fixed=TRUE)))...
Facebook API - How do I get a Facebook user's profile image through the Facebook API (without requir
...om/users_unique_url ). How can I accomplish this? Is there a Faceboook API call that fetches a user's profile image URL without the user needing to Allow the application?
...
Update data in ListFragment as part of ViewPager
...e can get by, using its instantiateItem(ViewGroup container, int position) call. It returns reference to fragment at position position. If FragmentStatePagerAdapter already holds reference to fragment in question, instantiateItem just returns reference to that fragment, and doesn't call getItem() to...
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
...
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...