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Why an interface can not implement another interface?
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implements means a behaviour will be defined for abstract methods (except for abstract classes obviously), you define the implementation.
extends means that a behaviour is inherited.
With interfaces it is possible to say that one interface should have that the same behaviour as another, the...
How to get MD5 sum of a string using python?
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For Python 2.x, use python's hashlib
import hashlib
m = hashlib.md5()
m.update("000005fab4534d05api_key9a0554259914a86fb9e7eb014e4e5d52permswrite")
print m.hexdigest()
Output: a02506b31c1cd46c2e0b6380fb94eb3d
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In Python, how do I read the exif data for an image?
I'm using PIL. How do I turn the EXIF data of a picture into a dictionary?
8 Answers
8...
What is the difference between char, nchar, varchar, and nvarchar in SQL Server?
...rs.
char and varchar cannot store Unicode characters.
char and nchar are fixed-length which will reserve storage space for number of characters you specify even if you don't use up all that space.
varchar and nvarchar are variable-length which will only use up spaces for the characters you store. It...
What are static factory methods?
...it. Otherwise, it tries to provide a "spare" connection, failing with an exception if there are none.
public class DbConnection{
private static final int MAX_CONNS = 100;
private static int totalConnections = 0;
private static Set<DbConnection> availableConnections = new HashSet<...
Does Typescript support the ?. operator? (And, what's it called?)
...n.
As far as what to call this operator in CoffeeScript, it's called the existential operator (specifically, the "accessor variant" of the existential operator).
From CoffeeScript's documentation on Operators:
The accessor variant of the existential operator ?. can be used to soak up null refe...
setTimeout in for-loop does not print consecutive values [duplicate]
... of the variable is made. Since the timeout handler is created in the context of that copy, it has its own private "i" to use.
edit — there have been a couple of comments over time in which some confusion was evident over the fact that setting up a few timeouts causes the handlers to all fire at...
What is the difference between Ruby 1.8 and Ruby 1.9
... Ruby (1.8) and the "new" version (1.9). Is there an "easy" or a "simple" explanation of the differences and why it is so different?
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Swift - Convert to absolute value
is there any way to get absolute value from an integer?
for example
4 Answers
4
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What is the difference between g++ and gcc?
...1 cc1plus ...) to call depending on the file-type, unless overridden with -x language, they have some differences.
The probably most important difference in their defaults is which libraries they link against automatically.
According to GCC's online documentation link options and how g++ is invoke...