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Are the days of passing const std::string & as a parameter over?
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Why would the string be moved from B to C in the by value case? If B is B(std::string b) and C is C(std::string c) then either we have to call C(std::move(b)) in B or b has to remain unchanged (thus 'unmoved from') until exiting B. (Perhaps an optimizing ...
How to create border in UIButton?
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Here's an updated version (Swift 3.0.1) from Ben Packard's answer.
import UIKit
@IBDesignable class BorderedButton: UIButton {
@IBInspectable var borderColor: UIColor? {
didSet {
if let bColor = borderColor {
self.layer.b...
How using try catch for exception handling is best practice
while maintaining my colleague's code from even someone who claims to be a senior developer, I often see the following code:
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How can I style an Android Switch?
...at defines the different states for the switcher drawable.
Here the copies from the Android sources:
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_enabled="false" android:drawable="@drawable/switch_thumb_disabled_holo_light" />
<it...
Add new field to every document in a MongoDB collection
...({}, {"$set": {"new_field": "value"}}, upsert=False, array_filters=None)
From documents
update_many(filter, update, upsert=False, array_filters=None, bypass_document_validation=False, collation=None, session=None)
filter: A query that matches the documents to update.
update: The modifications...
How do I parse an ISO 8601-formatted date?
...ou're using Python 3.7, have a look at this answer about datetime.datetime.fromisoformat.
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Storing custom objects in an NSMutableArray in NSUserDefaults
...[[NSMutableArray alloc] init];
}
You should check that the data returned from the user defaults is not nil, because I believe unarchiving from nil causes a crash.
Archiving is simple, using the following code:
[[NSUserDefaults standardUserDefaults] setObject:[NSKeyedArchiver archivedDataWithRoot...
How do I iterate over a JSON structure? [duplicate]
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Taken from jQuery docs:
var arr = [ "one", "two", "three", "four", "five" ];
var obj = { one:1, two:2, three:3, four:4, five:5 };
jQuery.each(arr, function() {
$("#" + this).text("My id is " + this + ".");
return (this != "fo...
How do I see the commit differences between branches in git?
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If commits have been cherry-picked from branch-X to master this won't filter them out. They will still be on the list of commits "In branch-X but not on master" even though they are actually in both..
– Tuffwer
Dec 12 '1...
What components are MVC in JSF MVC framework?
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@Jigar wikipedia says that "A controller accepts input from the user and instructs the model and viewport to perform actions based on that input." I doubt that FacesServlet "instructs the model", does it?
– yegor256
Feb 24 '11 at 12:13
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