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Is there a way to provide named parameters in a function call in JavaScript?
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ES2015 and later
In ES2015, parameter destructuring can be used to simulate named parameters. It would require the caller to pass an object, but you can avoid all of the checks inside the function if you also use default parameters...
What is the difference between UNION and UNION ALL?
What is the difference between UNION and UNION ALL ?
26 Answers
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How do I rename all folders and files to lowercase on Linux?
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A concise version using the "rename" command:
find my_root_dir -depth -exec rename 's/(.*)\/([^\/]*)/$1\/\L$2/' {} \;
This avoids problems with directories being renamed before files and trying to move files into non-existing directories (e.g. "A/A" into "a/a").
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Including an anchor tag in an ASP.NET MVC Html.ActionLink
...a link that includes an anchor tag (that is, directing the user to a page, and a specific section of the page).
7 Answers
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C++11 reverse range-based for-loop
...e key observation is that range-based for-loops work by relying on begin() and end() in order to acquire the range's iterators. Thanks to ADL, one doesn't even need to define their custom begin() and end() in the std:: namespace.
Here is a very simple-sample solution:
// --------------------------...
Convert Elixir string to integer or float
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Check Integer.parse/1 and Float.parse/1.
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Check if $_POST exists
I'm trying to check whether a $_POST exists and if it does, print it inside another string, if not, don't print at all.
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How to Batch Rename Files in a macOS Terminal?
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In your specific case you can use the following bash command (bash is the default shell on macOS):
for f in *.png; do echo mv "$f" "${f/_*_/_}"; done
Note: If there's a chance that your filenames start with -, place -- before them[1]:
mv -- "$f" "${f/_*_/_}"
Note: echo is prep...
How do I remove a substring from the end of a string in Python?
...t mean "remove this substring". x.strip(y) treats y as a set of characters and strips any characters in that set from the ends of x.
Instead, you could use endswith and slicing:
url = 'abcdc.com'
if url.endswith('.com'):
url = url[:-4]
Or using regular expressions:
import re
url = 'abcdc.co...
How do you see the entire command history in interactive Python?
I'm working on the default python interpreter on Mac OS X, and I Cmd + K (cleared) my earlier commands. I can go through them one by one using the arrow keys. But is there an option like the --history option in bash shell, which shows you all the commands you've entered so far?
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