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How to access random item in list?
...hen randomly pick out a string from that list and display it in a messagebox.
12 Answers
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I'm getting Key error in python
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A KeyError generally means the key doesn't exist. So, are you sure the path key exists?
From the official python docs:
exception KeyError
Raised when a mapping (dictionary) key is not found in the set of
existing keys.
For example:
>>> mydict = {'a'...
Getting started with F# [closed]
...ogramming F#: A comprehensive guide for writing simple code to solve complex problems by Chris Smith
Expert F# 2.0 (Expert's Voice in F#) by Don Syme, Adam Granicz, and Antonio Cisternino
and in addition to that...
Quick Links
Visual Studio (F# is standard feature of professional editions o...
Filter rows which contain a certain string
...lready posted by the @latemail in the comments above. You can use regular expressions for the second and subsequent arguments of filter like this:
dplyr::filter(df, !grepl("RTB",TrackingPixel))
Since you have not provided the original data, I will add a toy example using the mtcars data set. Imag...
Object of custom type as dictionary key
..._(self, other):
# Not strictly necessary, but to avoid having both x==y and x!=y
# True at the same time
return not(self == other)
The Python dict documentation defines these requirements on key objects, i.e. they must be hashable.
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How to merge 2 JSON objects from 2 files using jq?
...e * operator. When given two objects, it will merge them recursively. For example,
jq -s '.[0] * .[1]' file1 file2
Important: Note the -s (--slurp) flag, which puts files in the same array.
Would get you:
{
"value1": 200,
"timestamp": 1382461861,
"value": {
"aaa": {
"value1": "v...
How to Batch Rename Files in a macOS Terminal?
...or use it in a script.
"${f/_*_/_}" is an application of bash parameter expansion: the (first) substring matching pattern _*_ is replaced with literal _, effectively cutting the middle token from the name.
Note that _*_ is a pattern (a wildcard expression, as also used for globbing), not a regular...
dyld: Library not loaded … Reason: Image not found
When trying to run an executable I've been sent in Mac OS X, I get the following error
31 Answers
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What is the use of “ref” for reference-type variables in C#?
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Chris, your explanation is great; Thanks for helping me understand this concept.
– Andreas Grech
Jun 8 '09 at 5:42
4
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How to Select Columns in Editors (Atom,Notepad++, Kate, VIM, Sublime, Textpad,etc) and IDEs (NetBean
... answered Nov 26 '09 at 9:42
Alex BudovskiAlex Budovski
16.1k66 gold badges4646 silver badges5757 bronze badges
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