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How is CountDownLatch used in Java Multithreading?
Can someone help me to understand what Java CountDownLatch is and when to use it?
12 Answers
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How can I wait In Node.js (JavaScript)? l need to pause for a period of time
... first chunk of code right away
function1();
// call the rest of the code and have it execute after 3 seconds
setTimeout(function2, 3000);
It's similar to JohnnyHK's solution, but much neater and easier to extend.
share
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Append integer to beginning of list in Python [duplicate]
I have an integer and a list. I would like to make a new list of them beginning with the variable and ending with the list.
Writing a + list I get errors. The compiler handles a as integer, thus I cannot use append, or extend either.
How would you do this?
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Why should I use a semicolon after every function in javascript?
...seen different developers include semicolons after functions in javascript and some haven't. Which is best practice?
9 Answ...
What's the best way to use R scripts on the command line (terminal)?
It's very convenient to have R scripts for doing simple plots from the command line. However, running R from bash scripts is not convenient at all. The ideal might be something like
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Converting string from snake_case to CamelCase in Ruby
...ssify returns a string, whereas #constantize looks up constant in context (and does need camelize). 'active_record'.constantize gives error, 'active_record'.camelize.constantize returns the constant ActiveRecord, 'active_record'.classify returns the string 'ActiveRecord'. And if you did 'no_class'.c...
How to change plot background color?
I am making a scatter plot in matplotlib and need to change the background of the actual plot to black. I know how to change the face color of the plot using:
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Path.Combine for URLs?
Path.Combine is handy, but is there a similar function in the .NET framework for URLs ?
40 Answers
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Child with max-height: 100% overflows parent
I'm trying to understand what appears to be unexpected behaviour to me:
12 Answers
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Get all non-unique values (i.e.: duplicate/more than one occurrence) in an array
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You could sort the array and then run through it and then see if the next (or previous) index is the same as the current. Assuming your sort algorithm is good, this should be less than O(n2):
const findDuplicates = (arr) => {
let sorted_ar...