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What is an abstract class in PHP?
...bstract".
The purpose of this is to provide a kind of template to inherit from and to force the inheriting class to implement the abstract methods.
An abstract class thus is something between a regular class and a pure interface. Also interfaces are a special case of abstract classes where ALL met...
How to load a xib file in a UIView
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To get an object from a xib file programatically you can use: [[NSBundle mainBundle] loadNibNamed:@"MyXibName" owner:self options:nil] which returns an array of the top level objects in the xib.
So, you could do something like this:
UIView ...
Redirect to an external URL from controller action in Spring MVC
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You can use the RedirectView. Copied from the JavaDoc:
View that redirects to an absolute, context relative, or current request relative URL
Example:
@RequestMapping("/to-be-redirected")
public RedirectView localRedirect() {
RedirectView redirectView ...
How to work around the lack of transactions in MongoDB?
...g my project to perform atomic operations. I don't know whether this comes from my limited viewpoint (I have only worked with SQL databases so far), or whether it actually can't be done.
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R.exe, Rcmd.exe, Rscript.exe and Rterm.exe: what's the difference?
...t it is provided for backwards compatibility.
Rterm.exe is also a holdover from the days when Rcmd.exe was used. Can be ignored these days.
R CMD BATCH is a crutch that was needed in the days before littler and Rscript.exe, and similarly lingering from old docs and habits..
Rscript.exe is your frien...
What do I use for a max-heap implementation in Python?
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If you then want to pop elements, use:
heapq.heappop(minheap) # pop from minheap
heapq._heappop_max(maxheap) # pop from maxheap
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Custom CSS Scrollbar for Firefox
...Though that is not Baron's fault, if I download the page and prevent baron from initialising, the bug still occurs. So it looks like Chrome it at fault here.
– thephpdev
Apr 3 '18 at 10:55
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Binary search (bisection) in Python
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from bisect import bisect_left
def binary_search(a, x, lo=0, hi=None): # can't use a to specify default for hi
hi = hi if hi is not None else len(a) # hi defaults to len(a)
pos = bisect_left(a, x, lo, hi) # fin...
Is there hard evidence of the ROI of unit testing?
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The bean counters couldn't tell a unit test from the rest of the code if their lives depended on it. I support the suggestion to just do it. There's one caveat, though: If you are not alone, you need your fellow developers to embrace this practice. If not, they will un...
Regex expressions in Java, \\s vs. \\s+
... regular expression quantifiers, and they perform matches like this (taken from the documentation):
Greedy quantifiers
X? X, once or not at all
X* X, zero or more times
X+ X, one or more times
X{n} X, exactly n times
X{n,} X, at least n times
X{n,m} X, at least n but not more than m times
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