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Blocks and yields in Ruby
...y:
days = ["monday", "tuesday", "wednesday", "thursday", "friday"]
# select those which start with 't'
days.select do | item |
item.match /^t/
end
=> ["tuesday", "thursday"]
Or, we can also provide a custom sort algorithm, for instance based on the string size:
days.sort do |x,...
Rails where condition using NOT NIL
..., so you really should just use the joins predicate:
Foo.joins(:bar)
Select * from Foo Inner Join Bars ...
But, for the record, if you want a "NOT NULL" condition simply use the not predicate:
Foo.includes(:bar).where.not(bars: {id: nil})
Select * from Foo Left Outer Join Bars on .. WHERE ...
How to split a file into equal parts, without breaking individual lines? [duplicate]
...
this is a way better answer than the selected one
– smatthewenglish
Apr 28 '16 at 11:41
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Using NumberPicker Widget with Strings
...wrap true or false, try it you will know the difference
pickers.setWrapSelectorWheel(false);
//create button to test selected text string
btnPicker.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//get position (int)...
Difference between binary semaphore and mutex
...perspective, mutex are more like state-pattern where the algorithm that is selected by the state can change the state. The binary-semaphore are more like strategy pattern where the external algorithm can change the state and eventually the algorithm/strategy selected to run.
– ...
JQuery - find a radio button by value
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Try this:
$(":radio[value=foobar]")
This will select all radio buttons with the attribute value="foobar".
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Apache Prefork vs Worker MPM
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See also "How do I select which Apache MPM to use?" serverfault.com/a/383634
– Nazariy
Dec 18 '13 at 12:17
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How do you load custom UITableViewCells from Xib files?
...iles, as prototype cells.
If you need to attach a class to them, you can select the cell prototype and add the corresponding class (must be a descendant of UITableViewCell, of course).
Dequeue
And later on, dequeued using (swift 3.0):
override func tableView(tableView: UITableView, cellForRowA...
Removing input background colour for Chrome autocomplete?
...ent stylesheet shows :-internal-autofill-previewed and :-internal-autofill-selected pseudoclasses instead of -webkit-autofill... Mysteriously however, -webkit-autofill still works. I personally didn't need the !important.
– Andy
Apr 12 '19 at 6:48
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CodeFile vs CodeBehind
...bute of the Page directive or is there a way to create a web project which selects codebehind or codefile, by default, each time a new web page is added?
– Matt W
Nov 5 '09 at 8:42
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