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How do you read from stdin?
...f you want to prompt the user for input, you can use raw_input in Python 2.X, and just input in Python 3.
If you actually just want to read command-line options, you can access them via the sys.argv list.
You will probably find this Wikibook article on I/O in Python to be a useful reference as w...
How to include (source) R script in other scripts
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Here is one possible way. Use the exists function to check for something unique in your util.R code.
For example:
if(!exists("foo", mode="function")) source("util.R")
(Edited to include mode="function", as Gavin Simpson pointed out)
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Literal notation for Dictionary in C#?
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You use the collection initializer syntax, but you still need to make a new Dictionary<string, string> object first as the shortcut syntax is translated to a bunch of Add() calls (like your code):
var data = new Dictionary<string, string>
{
{ "test...
What to do about a 11000 lines C++ source file?
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How to use shell commands in Makefile
...l ls)
indented underneath all like that, it's a build command. So this expands $(shell ls), then tries to run the command FILES ....
If FILES is supposed to be a make variable, these variables need to be assigned outside the recipe portion, e.g.:
FILES = $(shell ls)
all:
echo $(FILES)
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Google Guice vs. PicoContainer for Dependency Injection
...tion is kept to a minimum.
Spring - Relatively easy to configure but most examples use Spring XML as the method for configuration. Spring XML files can become very large and complex over time and take time to load. Consider using a mix of Spring and hand cranked Dependency Injection to overcome this...
When to use AtomicReference in Java?
...amework rather than bare Atomic* unless you know what you're doing.
Two excellent dead-tree references which will introduce you to this topic:
Herlihy's excellent Art of Multiprocessor Programming
Java Concurrency in Practice
Note that (I don't know if this has always been true) reference as...
Python group by
Assume that I have a set of data pair where index 0 is the value and index 1 is the type:
6 Answers
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What can you use Python generator functions for?
...ors give you lazy evaluation. You use them by iterating over them, either explicitly with 'for' or implicitly by passing it to any function or construct that iterates. You can think of generators as returning multiple items, as if they return a list, but instead of returning them all at once they re...
Using git repository as a database backend
... some structured form (I'd prefer YAML, but it may just as well be JSON or XML).
5 Answers
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