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SQL “select where not in subquery” returns no results
Disclaimer: I have figured out the problem (I think), but I wanted to add this issue to Stack Overflow since I couldn't (easily) find it anywhere. Also, someone might have a better answer than I do.
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'AND' vs '&&' as operator
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If you use AND and OR, you'll eventually get tripped up by something like this:
$this_one = true;
$that = false;
$truthiness = $this_one and $that;
Want to guess what $truthiness equals?
If you said false... bzzzt, sorry, wrong!
$truthiness above has the value true. Why? = has ...
Changing Font Size For UITableView Section Headers
Can someone please instruct me on the easiest way to change the font size for the text in a UITableView section header?
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What is an alternative to execfile in Python 3?
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According to the documentation, instead of
execfile("./filename")
Use
exec(open("./filename").read())
See:
What’s New In Python 3.0
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Can pandas automatically recognize dates?
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You should add parse_dates=True, or parse_dates=['column name'] when reading, thats usually enough to magically parse it. But there are always weird formats which need to be defined manually. In such a case you can also add a date parser function, which is the most flexible way possi...
Ignore with CSS?
I'm working on a site which has line breaks inserted as <br> in some of the headings. Assuming I can't edit the source HTML, is there a way with CSS I can ignore these breaks?
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How to join two JavaScript Objects, without using JQUERY [duplicate]
I have two json objects obj1 and obj2, i want to merge them and crete a single json object.
The resultant json should have all the values from obj2 and the values from obj1 which is not present in obj2.
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Vertical line using XML drawable
...layer" and that is potentially shooting yourself in the foot when I will come across resizing etc. I wonder just why there is no documentation on the "shape" xmls, maybe someone from google could enlighten us? :)
– Kaspa
Apr 17 '10 at 17:14
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How to recognize swipe in all 4 directions
...h recognizer can only handle one direction. You can send them all to the same handler if you want, and sort it out there, or send them to different handlers. Here's one implementation:
override func viewDidLoad() {
super.viewDidLoad()
let swipeRight = UISwipeGestureRecognizer(target: self,...
What is a monad?
...seful for.
They are a pattern for chaining operations. It looks a bit like method chaining in object-oriented languages, but the mechanism is slightly different.
The pattern is mostly used in functional languages (especial Haskell uses them pervasively) but can be used in any language which support ...