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Check if a given key already exists in a dictionary
I wanted to test if a key exists in a dictionary before updating the value for the key.
I wrote the following code:
16 Answ...
How would Git handle a SHA-1 collision on a blob?
...mps such that the resulting git commit has your desired prefix.
Example: https://github.com/bradfitz/deadbeef
Daniel Dinnyes points out in the comments to 7.1 Git Tools - Revision Selection, which includes:
A higher probability exists that every member of your programming team will be attac...
“Cross origin requests are only supported for HTTP.” error when loading a local file
...r file:// or C:/, which stays true to the error message as they are not http://
So you can either install a webserver in your local PC or upload the model somewhere else and use jsonp and change the url to http://example.com/path/to/model
Origin is defined in RFC-6454 as
...they have the same...
How to delete the contents of a folder?
How can I delete the contents of a local folder in Python?
24 Answers
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How do you allow spaces to be entered using scanf?
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People (and especially beginners) should never use scanf("%s") or gets() or any other functions that do not have buffer overflow protection, unless you know for certain that the input will always be of a specific format (and ...
Random record in ActiveRecord
...tting a random record from a table via ActiveRecord. I've followed the example from Jamis Buck from 2006 .
25 Answers
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Is there a way to change the environment variables of another process in Unix?
On Unix, is there any way that one process can change another's environment variables (assuming they're all being run by the same user)? A general solution would be best, but if not, what about the specific case where one is a child of the other?
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What does a type followed by _t (underscore-t) represent?
This seems like a simple question, but I can't find it with the Stack Overflow search or Google. What does a type followed by a _t mean? Such as
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How to get rid of `deprecated conversion from string constant to ‘char*’` warnings in GCC?
So I'm working on an exceedingly large codebase, and recently upgraded to gcc 4.3, which now triggers this warning:
24 Answ...
Link to “pin it” on pinterest without generating a button
I have a page with tens or hundreds of posts, each one with social buttons.
I just can't generate all the buttons for each url: it is too slow (facebook, g+, twitter, pinterest... for hundreds of links). So, instead of the facebook share button to be generated on the fly, I use a simple img pointing...