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What's the best way to parse command line arguments? [closed]
...xit()
if o in ("-o", "--output"):
output = a
So in a word, here is how it works.
You've got two types of options. Those who are receiving arguments, and those who are
just like switches.
sys.argv is pretty much your char** argv in C. Like in C you skip the first element which...
HTTP GET with request body
...elding's comment about including a body with a GET request.
Yes. In other words, any HTTP request message is allowed to contain a message body, and thus must parse messages with that in mind. Server semantics for GET, however, are restricted such that a body, if any, has no semantic meaning to the ...
C/C++ Struct vs Class
...hods, no constructor, no base classes, etc. Although C++ inherited the keyword, it extended the semantics. (This, however, is why things default to public in structs—a struct written like a C struct behaves like one.)
While it's possible to fake some OOP in C—for instance, defining functions ...
Setting up two different static directories in node.js Express framework
... not one url path that fails over between two local directories.
In other words the URL pattern:
http://your.server.com/public/*
Serves files from the local directory public while:
http://your.server.com/public2/*
Serves files from the local directory public2.
BTW this is also useful if you ...
“find: paths must precede expression:” How do I specify a recursive search that also finds files in
...ally receiving a command line like this:
find . -name frcode.c locate.c word_io.c -print
That command is of course not going to work. Instead of doing things
this way, you should enclose the pattern in quotes or escape the
wildcard:
$ find . -name '*.c' -print
$ find . -name \*.c ...
What are Unwind segues for and how do you use them?
... view controller (A or B) initiated the segue and go back to it.
In other words, think of the unwind action as describing where the segue is coming from, rather than where it is going to.
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How can I replace a newline (\n) using sed?
... newlines from each line
sed 's/\n/foo\n/' file # to add a word to the end of each line
will NEVER work, because the trailing newline is removed before
the line is put into the pattern space. To perform the above tasks,
use one of these scripts instead:
tr -d '\n' < fi...
What is the purpose of the var keyword and when should I use it (or omit it)?
What exactly is the function of the var keyword in JavaScript, and what is the difference between
19 Answers
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What is the difference between a framework and a library?
... explicitly select to show the content).
Wikipedia calls framework a "buzzword". It defines a software framework as
A software framework is a re-usable
design for a software system (or
subsystem). A software framework may
include support programs, code
libraries, a scripting language, o...
How to produce a range with step n in bash? (generate a sequence of numbers with increments)
...Bash4 still isn't mainstream, no. Why not seq? Well, let's say it with the words of the bot in the IRC channel #bash: "seq(1) is a highly nonstandard external command used to count to 10 in silly Linux howtos."
– TheBonsai
Jun 8 '09 at 18:11
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