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What is the difference between Python's list methods append and extend?
...gives you: [1, 2, 3, [4, 5]]
extend: Extends list by appending elements from the iterable.
x = [1, 2, 3]
x.extend([4, 5])
print (x)
gives you: [1, 2, 3, 4, 5]
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What is a faster alternative to Python's http.server (or SimpleHTTPServer)?
...or Python 2) is a great way of serve the contents of the current directory from the command line:
13 Answers
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How to get function parameter names/values dynamically?
... This is already provided in a local variable named arguments.
excerpt from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions_and_function_scope/arguments:
The arguments object is not an Array. It is similar to an Array, but does not have any Array properties except le...
How can I count the number of matches for a regex?
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Solution for Java 8 and older
You'll have to do the following. (Starting from Java 9, there is a nicer solution)
int count = 0;
while (matcher.find())
count++;
Btw, matcher.groupCount() is something completely different.
Complete example:
import java.util.regex.*;
class Test {
public...
Why use a public method in an internal class?
...ion of a member and immediately know whether it is going to be called only from internal code.
Unfortunately, that doesn't always work out nicely; for example, an internal class that implements an internal interface still has to have the implementing members marked as public, because they are part...
What is the difference between a web API and a web service?
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A web service typically offers a WSDL from which you can create client stubs automatically. Web Services are based on the SOAP protocol.
ASP.NET Web API is a newer Microsoft framework which helps you to build REST based interfaces. The response can be either JSON...
Get full path without filename from path that includes filename
...re passing to it does contain a file name; it simply removes the final bit from the path, whether it is a file name or directory name (it actually has no idea which).
You could validate first by testing File.Exists() and/or Directory.Exists() on your path first to see if you need to call Path.GetDi...
Why does my application spend 24% of its life doing a null check?
...e of code. The code for the binary tree iterator is below with the results from running performance analysis against it.
3 ...
C default arguments
...oblem and allow for an empty call. #define vrange(...) CALL(range,(param){.from=1, .to=100, .step=1, __VA_ARGS__})
– u0b34a0f6ae
Oct 29 '11 at 4:58
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ANTLR: Is there a simple example?
...r)
After creating the grammar, you'll want to generate a parser and lexer from it. Download the ANTLR jar and store it in the same directory as your grammar file.
Execute the following command on your shell/command prompt:
java -cp antlr-3.2.jar org.antlr.Tool Exp.g
It should not produce any er...