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From ND to 1D arrays
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Is there an equivalent for the Zip function in Clojure Core or Contrib?
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#(apply map list %) transposes a matrix just like the Python zip* function. As a macro definition:
user=> (defmacro py-zip [lst] `(apply map list ~lst))
#'user/py-zip
user=> (py-zip '((1 2 3 4) (9 9 9 9) (5 6 7 8)))
((1 9 5) (2 9 6) (3 9 7) (4 9 8))
user=> (py-zip ...
How to extract a floating number from a string [duplicate]
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Python docs has an answer that covers +/-, and exponent notation
scanf() Token Regular Expression
%e, %E, %f, %g [-+]?(\d+(\.\d*)?|\.\d+)([eE][-+]?\d+)?
%i [-+]?(0[xX][\dA-Fa-f]+|0[0-7]*|\d+)
This ...
data type not understood
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How do I get the object if it exists, or None if it does not exist?
...the DoesNotExist exception every time.
The idiomatic way to handle this in python is to wrap it in a try catch:
try:
go = SomeModel.objects.get(foo='bar')
except SomeModel.DoesNotExist:
go = None
What I did do, is to subclass models.Manager, create a safe_get like the code above and use t...
How can I change my Cygwin home folder after installation?
...The user's home directory is set to the POSIX path given in the home="..." XML-alike setting in the user's description attribute in SAM or AD. See the section called “The desc schema” for a detailed description.
The following will make the user's home directory in Cygwin the same as is used fo...
Create a custom event in Java
... to be main, and set that class as the ${Main-Class} variable in the build.xml file:
4 Things needed on throwing side code:
import java.util.*;//import of java.util.event
//Declaration of the event's interface type, OR import of the interface,
//OR declared somewhere else in the package
interface...
Go install fails with error: no install location for directory xxx outside GOPATH
...uages do in fact use these, but maybe they're not as visible. For example, Python (a language famous for its simplicity) has PYTHONHOME instead of GOROOT and PYTHONPATH instead of GOPATH. Even (GC)C has LIBRARY_PATH, C_INCLUDE_PATH, etc.
– Hut8
Jan 31 '16 at 0:...
Disable git EOL Conversions
... text
*.json text
*.properties text
*.txt text
*.xml text
# These files are binary and should be left untouched
# (binary is macro for -text -diff)
*.class binary
*.jar binary
*.gif binary
*.jpg binary
*.png binary
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How to access command line parameters?
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This is where clap-rs comes in handy.
It feels a bit like argparse from Python.
Here is an example of how it looks like:
let matches = App::new("myapp")
.version("1.0")
.author("Kevin K. <kbknapp@gmail.com>")
.about("Does aw...