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What is the difference/usage of homebrew, macports or other package installation tools? [closed]
...xcode IDE installed.
xcode can be installed from the mac app store, its a free download but it takes a while since its around 5GB (if I remember correctly).
macports is an osx version of the port utility from BSD (as osx is derived from BSD, this was a natural choice). For anyone familiar with any...
How to compute the similarity between two text documents?
...(IR) covers this. See esp. Introduction to Information Retrieval, which is free and available online.
Computing Pairwise Similarities
TF-IDF (and similar text transformations) are implemented in the Python packages Gensim and scikit-learn. In the latter package, computing cosine similarities is as...
How does a garbage collector avoid an infinite loop here?
...terminates (in other words, the garbage collector gives up and simply will free all memory without taking finalizers into account).
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Array or List in Java. Which is faster?
...st is a doubly linked list.
In Java [java.util.]List is an implementation-free interface (pure abstract class in C++ terms). List can be a doubly linked list - java.util.LinkedList is provided. However, 99 times out of 100 when you want a make a new List, you want to use java.util.ArrayList instead...
How do I make a simple makefile for gcc on Linux?
...good start on that.
Here's the Makefile I like to use for C source. Feel free to use it:
TARGET = prog
LIBS = -lm
CC = gcc
CFLAGS = -g -Wall
.PHONY: default all clean
default: $(TARGET)
all: default
OBJECTS = $(patsubst %.c, %.o, $(wildcard *.c))
HEADERS = $(wildcard *.h)
%.o: %.c $(HEADERS)
...
When to wrap quotes around a shell variable?
..., "${arr[idx]}", "${string:start:length}"
inside [[ ]] expression which is free from word splitting and globbing issues (this is a matter of style and opinions can vary widely)
where we want word splitting (for word in $words)
where we want globbing (for txtfile in *.txt; do ...)
where we want ~ to ...
NumPy: function for simultaneous max() and min()
...d. (Note that this is all implemented in C, so the loops are more or less free anyway).
EDIT Sorry to the 4 of you who upvoted and had faith in me. You definitely can optimize this.
Here's some fortran code which can be compiled into a python module via f2py (maybe a Cython guru can come along...
Why are we not to throw these exceptions?
...at may cause an exception which exactly matches an existing one, then feel free to use that, especially if you are trying to match some built-in behavior. Just make sure you choose a very specific exception type then.
In general though, unless you find a (specific) exception that fills your need, y...
Reading 64bit Registry from a 32bit application
...to read and also this one about the Elvis operator.
Hint: You can use the free edition of Linqpad to test all examples under Windows. It doesn't require an installation. Don't forget to press F4 and enter Microsoft.Win32 in the Namespace import tab. In Visual Studio, you require using Microsoft.Win...
What are the “standard unambiguous date” formats for string-to-date conversion in R?
...ed Format:
date <- as.Date(sdate4, format = "%Y.%m.%d") # ==> Error Free Date Conversion.
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