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Xcode 'Build and Archive' menu item disabled
...cause for some reason the build configuration was set to MAC 64 bit (dont know how it got there...) , returned it to IOS and it got enabled again.
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Python Selenium accessing HTML source
...tml_soup: BeautifulSoup = BeautifulSoup(html_source_code, 'html.parser')
Now you can apply BeautifulSoup function to extract data...
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Multiple working directories with Git?
...ers aware of each other.
See commit 799767cc9 (Git 2.5rc2)
That means you now can do a git worktree add <path> [<branch>]
Create <path> and checkout <branch> into it. The new working directory
is linked to the current repository, sharing everything except working
directory ...
Understanding the Gemfile.lock file
...ck in the application together with the Gemfile and Gemfile.lock snapshot. Now, your repository has a record of the exact versions of all of the gems that you used the last time you know for sure that the application worked...
This is important: the Gemfile.lock makes your application a single packa...
Scheduling R Script
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Now there is built in option in RStudio to do this, to run scheduler first install below packages
install.packages('data.table')
install.packages('knitr')
install.packages('miniUI')
install.packages('shiny')
insta...
Difference between `set`, `setq`, and `setf` in Common Lisp?
...namic ones. And
there was no SETQ or SETF, just the SET function.
What is now written as:
(setf (symbol-value '*foo*) 42)
was written as:
(set (quote *foo*) 42)
which was eventually abbreviavated to SETQ (SET Quoted):
(setq *foo* 42)
Then lexical variables happened, and SETQ came to be use...
How do I check if an HTML element is empty using jQuery?
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I do not know why but method from this answer: if($.trim($("selector").html())=='') worked. .is(':empty') did not!
– Zeljko Miloradovic
Jun 8 '18 at 17:48
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Does Python optimize tail recursion?
...ons.
The clean way: modifying the Y combinator
The Y combinator is well known; it allows to use lambda functions in a recursive
manner, but it doesn't allow by itself to embed recursive calls in a loop. Lambda
calculus alone can't do such a thing. A slight change in the Y combinator however
can pr...
Perform debounce in React.js
...ery debouncedMethod call, so the newly created debounce function does not know anything about former calls! You must reuse the same debounced function over time or the debouncing will not happen.
NOT a good idea:
var SearchBox = React.createClass({
debouncedMethod: debounce(function () {...},1...
Convert pandas dataframe to NumPy array
I am interested in knowing how to convert a pandas dataframe into a NumPy array.
15 Answers
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