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Why should the “PIMPL” idiom be used? [duplicate]
...() to be able to use private members of CatImpl. Cat::Purr() would not be allowed such an access without a friend declaration.
Because you then don't mix responsibilities: one class implements, one class forwards.
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How can I show hidden files (starting with period) in NERDTree?
... James FassettJames Fassett
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JavaScript, elegant way to check nested object properties for null/undefined [duplicate]
...e of using the app this gets populated. Let's say somwhere, after an AJAX call or something i do this:
4 Answers
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Referencing a string in a string array resource with xml
...eferencing an XML string in an XML Array (Android)
You can "cheat" (not really) the array definition by addressing independent strings INSIDE the definition of the array. For example, in your strings.xml:
<string name="earth">Earth</string>
<string name="moon">Moon</string>...
Hyphen, underscore, or camelCase as word delimiter in URIs?
...designing an HTTP-based API for an intranet app. I realize it's a pretty small concern in the grand scheme of things, but: should I use hyphens, underscores, or camelCase to delimit words in the URIs?
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Using Pairs or 2-tuples in Java [duplicate]
...to design this class further regarding equality, immutability, etc., especially if you plan to use instances as keys for hashing.
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Is there any way to git checkout previous branch?
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wow, I totally should have just tried it! figured - was a shell-ism, and that if the functionality was in git, it would be something different
– Matt Briggs
Aug 26 '11 at 16:17
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Why does UITableViewCell remain highlighted?
...rs.com/showthread.php?t=577677
Swift version
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
// deselect the selected row if any
let selectedRow: IndexPath? = tableView.indexPathForSelectedRow
if let selectedRowNotNill = selectedRow {
tableVie...
MySQL Orderby a number, Nulls last
... tablename WHERE visible=1 ORDER BY -position DESC, id DESC
It is essentially the inverse of position DESC placing the NULL values last but otherwise the same as position ASC.
A good reference is here http://troels.arvin.dk/db/rdbms#select-order_by
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How to check for a valid Base64 encoded string
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calling base64String.Contains multiple times may result in poor performance incase of base64String being a large string.
– NucS
Jul 23 '15 at 11:46
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