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Advantage of switch over if-else statement
What's the best practice for using a switch statement vs using an if statement for 30 unsigned enumerations where about 10 have an expected action (that presently is the same action). Performance and space need to be considered but are not critical. I've abstracted the snippet so don't hate m...
How/When does Execute Shell mark a build as failure in Jenkins?
The horror stories I found while searching for an answer for this one...
6 Answers
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How can I declare and define multiple variables in one line using C++?
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But personally I prefer the following which has been pointed out.
It's a more readable form in my view.
int column = 0, row = 0, index = 0;
or
int column = 0;
int row = 0;
int index = 0;
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When to use IMG vs. CSS background-image?
In what situations is it more appropriate to use an HTML IMG tag to display an image, as opposed to a CSS background-image , and vice-versa?
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Why does CSS work with fake elements?
In my class, I was playing around and found out that CSS works with made-up elements.
19 Answers
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UnicodeDecodeError when redirecting to file
...acters, and (2) string/array of bytes. This distinction has been mostly ignored for a long time because of the historic ubiquity of encodings with no more than 256 characters (ASCII, Latin-1, Windows-1252, Mac OS Roman,…): these encodings map a set of common characters to numbers between 0 and 255...
“Cloning” row or column vectors
Sometimes it is useful to "clone" a row or column vector to a matrix. By cloning I mean converting a row vector such as
9 A...
What is the difference between -viewWillAppear: and -viewDidAppear:?
...thod. Basically this method is called whenever the view was loaded into memory. So for example, if my view is a form with 3 labels, I would add the labels here; the view will never exist without those forms.
2) ViewWillAppear: I use ViewWillAppear usually just to update the data on the form. So, fo...
Insert into a MySQL table or update if exists
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+1 From what I've found, this method is less problematic for auto-increment keys and other unique key collisions than REPLACE INTO, and it is more efficient.
– Andrew Ensley
May 11 '12 at 21:27
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Which is preferred: Nullable.HasValue or Nullable != null?
...<>.HasValue because I liked the semantics. However, recently I was working on someone else's existing codebase where they used Nullable<> != null exclusively instead.
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