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Python Sets vs Lists
In Python, which data structure is more efficient/speedy? Assuming that order is not important to me and I would be checking for duplicates anyway, is a Python set slower than a Python list?
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Installing Apple's Network Link Conditioner Tool
... Conditioner Tool to additional tools for
Xcode
Go to the below link
https://developer.apple.com/download/more/?q=Additional%20Tools
Install the dmg file, select hardware from installer
select Network Link conditioner prefpane
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How to get a pixel's x,y coordinate color from an image?
... transparency with 0 being fully transparent.
Here is a jsFiddle example: http://jsfiddle.net/thirtydot/9SEMf/869/ I used jQuery for convenience in all of this, but it is by no means required.
Note: getImageData falls under the browser's same-origin policy to prevent data leaks, meaning this tech...
Lowercase JSON key names with JSON Marshal in Go
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Insert image after each list item
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Disable developer mode extensions pop up in Chrome
...ble-extensions --disable-extensions-file-access-check --disable-extensions-http-throttling"); instead of just `--disable-extensions. I think one of the additional switches can be omitted, but not both.
– Anders Lindén
Apr 4 '17 at 12:27
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How does one use rescue in Ruby without the begin and end block
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How do you rotate a two dimensional array?
Inspired by Raymond Chen's post , say you have a 4x4 two dimensional array, write a function that rotates it 90 degrees. Raymond links to a solution in pseudo code, but I'd like to see some real world stuff.
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How do I perform the SQL Join equivalent in MongoDB?
How do I perform the SQL Join equivalent in MongoDB?
19 Answers
19
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How can I negate the return-value of a process?
I'm looking for a simple, but cross-platform negate -process that negates the value a process returns. It should map 0 to some value != 0 and any value != 0 to 0, i.e. the following command should return "yes, nonexistingpath doesn't exist":
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