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How to duplicate object properties in another object?
... debugging. JS sucks like that, so careful coding to prevent such problems from occurring is prudent.
– Eli Bendersky
Sep 26 '13 at 21:08
2
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Struct like objects in Java
...an cluttering it with needless getters and setters.
Java Code Conventions from 1999 and still unchanged.
10.1 Providing Access to Instance and Class Variables
Don't make any instance or class variable public without good reason. Often, instance variables don't need to be explicitly set or got...
Static variable inside of a function in C
...ists. If x were defined without the keyword static, the lifetime would be from the entry into foo() to the return from foo(); so it would be re-initialized to 5 on every call.
The keyword static acts to extend the lifetime of a variable to the lifetime of the programme; e.g. initialization occurs ...
How do you design object oriented projects? [closed]
...onality.
Create a class diagram. If you're a Java developer, NetBeans 6.7 from Sun has a UML module that allows for diagramming as well as round-trip engineering and it's FREE. Eclipse (an open source Java IDE), also has a modeling framework, but I have no experience with it. You may also want t...
Possible to make labels appear when hovering over a point in matplotlib?
...ex and checking if ind["ind"][0] == prev_ind. Then only update if you move from one point to another (update text), stop hovering (make the annotation invisible) or start hovering (make annotation visible). With this change it's way more clean and efficient.
– Sembei Norimaki
...
How to round up the result of integer division?
... it once, you don't need to store the recordsPerPage specially if it comes from an expensive function to fetch the value from a config file or something.
I.e. this might be inefficient, if config.fetch_value used a database lookup or something:
int pageCount = (records + config.fetch_value('recor...
What's the fastest way to delete a large folder in Windows?
... suggestion is the fastest. Install cygwin.com then use rm -rfv folderName from the cygwin command prompt.
– Lonnie Best
Jan 8 '13 at 20:34
1
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Test if a variable is a list or tuple
... certain type of object, it's that you artificially restrict your function from doing the right thing with unexpected object types that would otherwise do the right thing. If you have a final fallback that is not type-checked, you remove this restriction. It should be noted that too much type chec...
Iterating over every two elements in a list
...
You need a pairwise() (or grouped()) implementation.
For Python 2:
from itertools import izip
def pairwise(iterable):
"s -> (s0, s1), (s2, s3), (s4, s5), ..."
a = iter(iterable)
return izip(a, a)
for x, y in pairwise(l):
print "%d + %d = %d" % (x, y, x + y)
Or, more gen...
What is the documents directory (NSDocumentDirectory)?
...le.com/library/ios/technotes/tn2406/_index.html
The Apple sanctioned way (from the link above) is as follows:
// Returns the URL to the application's Documents directory.
- (NSURL *)applicationDocumentsDirectory
{
return [[[NSFileManager defaultManager] URLsForDirectory:NSDocumentDirectory inD...