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What's so great about Lisp? [closed]
...You could in theory embed any language into Lisp like Rust, Ruby, C, Java, Python, Erlang. So the s-expression version of Python (Hy) and the of Rust is called (Risp) [although I don't know how stable these are]. If you write code in Hy instead of Python you have the ability of macros and structur...
What is the 'dynamic' type in C# 4.0 used for?
...is being able to reuse variables for different types of data. I'm sure the Python, Ruby, and Perl programmers out there can think of a million ways to take advantage of this, but I've been using C# so long that it just feels "wrong" to me.
dynamic foo = 123;
foo = "bar";
OK, so you most likely wi...
Detect if a NumPy array contains at least one non-numeric value?
... Why doesn't something like float('nan') in x not work? I tried it and python returns False where x = [1,2,3,float('nan')].
– Charlie Parker
Oct 13 '16 at 22:02
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Set Django IntegerField by choices=… name
...es
super(models.IntegerField, self).__init__(**kwargs)
def to_python(self, value):
return self.val2choice[value]
def get_db_prep_value(self, choice):
return self.choice2val[choice]
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Extracting text OpenCV
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Hi, how do i achieve the same outcome with python cv2?
– dnth
Oct 28 '15 at 9:19
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How can I grep for a string that begins with a dash/hyphen?
... beginning with a dash however it sees fit. Most of the Bash built-ins and Linux and GNU commands handle -- as an option terminator. Use 'set -x' to see the commands and arguments that Bash uses before they will be executed, but after Bash has expanded escapes, globs, and braces. Grep is a confusing...
How to create ls in windows command prompt?
...talled on your system, you can install it from Cash, a library I wrote for Linux commands on Windows:
npm install cash-ls -g
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Regex: match everything but specific pattern
...ny languages, use \A to define the unambiguous start of string, and \z (in Python, it is \Z, in JavaScript, $ is OK) to define the very end of the string.
Dot note: In many flavors (but not POSIX, TRE, TCL), . matches any char but a newline char. Make sure you use a corresponding DOTALL modifier (/s...
What do linkers do?
...lays could be "loaded" on top of that memory, hence the name, "overlays"). Linux has shared libraries, which is basically the same idea as DLLs (hard core Linux guys I know would tell me there are MANY BIG differences).
Hope this helps you understand!
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How do I append text to a file?
What is the easiest way to append text to a file in Linux?
4 Answers
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