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Capture characters from standard input without waiting for enter to be pressed
...y for me. But in C or C++, what is the best way to read a character from standard input without waiting for a newline (press enter).
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Are foreign keys really necessary in a database design?
... ON DELETE CASCADE. This means that if you have one table containing users and another containing orders or something, then deleting a user could automatically delete all orders that point to that user.
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How to find all combinations of coins when given some dollar value
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I looked into this once a long time ago, and you can read my little write-up on it. Here’s the Mathematica source.
By using generating functions, you can get a closed-form constant-time solution to the problem. Graham, Knuth, and Patashnik’s Concrete Mathematic...
How do I browse an old revision of a Subversion repository through the web view?
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I am absolutely stunned this works... (I just checked and it does). I've been told many times it's not possible. Note that the string mentioned must be right after the repo root in the URL, then you can put subdirs of the repo after it.
– rmeador
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Two way/reverse map [duplicate]
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You can create your own dictionary type by subclassing dict and adding the logic that you want. Here's a basic example:
class TwoWayDict(dict):
def __setitem__(self, key, value):
# Remove any previous connections with these values
if key in self:
del s...
Calendar returns wrong month [duplicate]
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Months are indexed from 0 not 1 so 10 is November and 11 will be December.
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How do you know what to test when writing unit tests? [closed]
... code, or a completely new feature.
Start simple. Don’t go running off and trying to get your head round
a testing framework as well as being
TDD-esque. Debug.Assert works fine.
Use it as a starting point. It doesn’t
mess with your project or create
dependencies.
Start positive. Yo...
How to refer to relative paths of resources when working with a code repository
We are working with a code repository which is deployed to both Windows and Linux - sometimes in different directories. How should one of the modules inside the project refer to one of the non-Python resources in the project (CSV files, etc.)?
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Distinct() with lambda?
Right, so I have an enumerable and wish to get distinct values from it.
18 Answers
18
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Check if a string contains one of 10 characters
I'm using C# and I want to check if a string contains one of ten characters, *, &, # etc etc.
6 Answers
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