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How do I scroll the UIScrollView when the keyboard appears?
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It's good to convert activeField.frame to relative frame as activeField doesn't have to be an immediate child to self.view. Updated code should look something like: CGRect aRect = self.view.frame; aRect.size.height -= kbSize.height; CGRe...
How can I check if the current date/time is past a set date/time?
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Check PHP's strtotime-function to convert your set date/time to a timestamp: http://php.net/manual/en/function.strtotime.php
If strtotime can't handle your date/time format correctly ("4:00PM" will probably work but not "at 4PM"), you'll need to use string-f...
What does extern inline do?
I understand that inline by itself is a suggestion to the compiler, and at its discretion it may or may not inline the function, and it will also produce linkable object code.
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Java regex capturing groups indexes
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Capturing and grouping
Capturing group (pattern) creates a group that has capturing property.
A related one that you might often see (and use) is (?:pattern), which creates a group without capturing property, hence named non-capturi...
Class with single method — best approach?
...not pose any risk to bloat are excellent cases for static methods - System.Convert as an example. If your project is a one-off with no requirements for future maintenance, the overall architecture really isn't very important - static or non static, doesn't really matter - development speed does, how...
How to construct a set out of list items in python?
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Just note that the order of the elements in a list is generally lost when converting the list to a set since a set is inherently unordered. (One exception in CPython, though, seems to be if the list consists only of non-negative integers, but I assume this is a consequence of the implementation of ...
How to create a colored 1x1 UIImage on the iPhone dynamically?
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You can use CGContextSetFillColorWithColor and CGContextFillRect for this:
Swift
extension UIImage {
class func image(with color: UIColor) -> UIImage {
let rect = CGRectMake(0.0, 0.0, 1.0, 1.0)
UIGraphicsBeginImageContext(rect.size)
le...
How to use a custom comparison function in Python 3?
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Use the key argument (and follow the recipe on how to convert your old cmp function to a key function).
functools has a function cmp_to_key mentioned at docs.python.org/3.6/library/functools.html#functools.cmp_to_key
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Django migration strategy for renaming a model and relationship fields
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Thank you for this! I think that the key part is converting all foreign keys, in or out of the model to be renamed, to IntegerField. This worked perfectly for me, and has the added advantage that they get recreated with the correct name. Naturally I would advise reviewing a...
Is 161803398 A 'Special' Number? Inside of Math.Random()
...398 = 1.61803398 * 10^8 ≈ φ * 10^8
More about the golden ratio here.
And a really good read for the casual mathematician here.
And I found a research paper on random number generators that agrees with this assertion. (See page 53.)
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