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Generate list of all possible permutations of a string
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There are several ways to do this. Common methods use recursion, memoization, or dynamic programming. The basic idea is that you produce a list of all strings of length 1, then in each iteration, for all strings produced in the last iteration, add tha...
Getting the class name of an instance?
How do I find out a name of class that created an instance of an object in Python if the function I am doing this from is the base class of which the class of the instance has been derived?
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Replace duplicate spaces with a single space in T-SQL
I need to ensure that a given field does not have more than one space (I am not concerned about all white space, just space) between characters.
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Spring: @Component versus @Bean
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@Component and @Bean do two quite different things, and shouldn't be confused.
@Component (and @Service and @Repository) are used to auto-detect and auto-configure beans using classpath scanning. There's an implicit one-to-one mapping between th...
How to pass a variable from Activity to Fragment, and pass it back?
...ctivity (sending or not data), you need to use interfaces. The way you can do this is explained really good in the documentation tutorial of communication between fragments. Because all fragments communicate between each other through the activity, in this tutorial you can see how you can send data ...
CSS text-overflow: ellipsis; not working?
I don't know why this simple CSS isn't working...
15 Answers
15
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How can I combine hashes in Perl?
...e variables
use Hash::Merge for complex nested variables
Pitfalls
What do to when both hashes contain one or more duplicate keys
(see e.g., Perl - Merge hash containing duplicate keys)
(see e.g, Perl hashes: how to deal with duplicate keys and get possible pair)
Should a key-value pair with a...
Truncating floats in Python
...t to remove digits from a float to have a fixed number of digits after the dot, like:
29 Answers
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How to cast int to enum in C++?
How do I cast an int to an enum in C++?
5 Answers
5
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Import CSV to mysql table
...g the first row, and assigning them as column names.
EDIT-2
From MySQL docs on LOAD DATA syntax:
The IGNORE number LINES option can be used to ignore lines at the
start of the file. For example, you can use IGNORE 1 LINES to skip
over an initial header line containing column names:
LOAD...