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vector::at vs. vector::operator[]
I know that at() is slower than [] because of its boundary checking, which is also discussed in similar questions like C++ Vector at/[] operator speed or ::std::vector::at() vs operator[] << surprising results!! 5 to 10 times slower/faster! . I just don't understand what the at() met...
How do I check if a string contains a specific word?
...s "falsey", we can't use simpler constructs like !strpos($a, 'are').
Edit:
Now with PHP 8 you can do this:
if (str_contains('How are you', 'are')) {
echo 'true';
}
RFC
str_contains
share
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imp...
How do I override __getattr__ in Python without breaking the default behavior?
...
-1 This does modify default behavior. Now you have an AttributeError without the context of the attribute in the exception args.
– wim
Nov 26 '18 at 19:43
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WITH CHECK ADD CONSTRAINT followed by CHECK CONSTRAINT vs. ADD CONSTRAINT
...e trusted to accurately represent the state of the data in the table right now. It can, however, but can be trusted to check data added and modified in the future.
Additionally, untrusted constraints are disregarded by the query optimiser.
The code to enable check constraints and foreign key const...
jQuery equivalent of JavaScript's addEventListener method
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As of jQuery 1.7, .on() is now the preferred method of binding events, rather than .bind():
From http://api.jquery.com/bind/:
As of jQuery 1.7, the .on() method is the preferred method for
attaching event handlers to a document. For earlier vers...
How to change the order of DataFrame columns?
... with a list of the columns, rearranged as needed.
This is what you have now:
In [6]: df
Out[6]:
0 1 2 3 4 mean
0 0.445598 0.173835 0.343415 0.682252 0.582616 0.445543
1 0.881592 0.696942 0.702232 0.696724 0.373551 0.670208
2 0.662527 ...
Hibernate Annotations - Which is better, field or property access?
...ou avoid persisting a calculated value by having property based access? I know you are arguing not to do so but I am not getting the point here. Can you please explain?
– Geek
Jun 19 '14 at 11:12
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Why aren't my breakpoints working?
...ion went along these lines: "come on, please, you really think I wouldn't know better...... oh.")
Make sure you haven't accidentally set "Active Build Configuration" to "Release."
Under "Targets" in the graphical tree display of your project, right click on your Target and do "Get Info." Look fo...
FTP/SFTP access to an Amazon S3 Bucket [closed]
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Update
S3 now offers a fully-managed SFTP Gateway Service for S3 that integrates with IAM and can be administered using aws-cli.
There are theoretical and practical reasons why this isn't a perfect solution, but it does work...
You ca...
How to generate string of a certain length to insert into a file to meet a file size criteria?
...application written in C# which will automatically generate the files. I know the size of each file, ex. 100KB, and how many files to generate. What I need help with is how to generate a string less than or equal to the required file size.
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