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File changed listener in Java
...n a file has been changed in the file system. I have found nothing but a thread that polls the lastModified File property and clearly this solution is not optimal.
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Dump a NumPy array into a csv file
...rray into a CSV file? I have a 2D NumPy array and need to dump it in human-readable format.
11 Answers
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Best way to store time (hh:mm) in a database
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a small disadvantage is the lack of readability in the database
– Jowen
Dec 17 '13 at 14:37
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Running Bash commands in Python
...nd you end up copy/pasting multiple lines of code ... which conveniently already exist in the standard library as a set of higher-level wrapper functions for various purposes, which are presented in more detail in the following.
Here's a paragraph from the documentation:
The recommended approac...
Copying data from one SQLite database to another
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This is kind of obvious ... but if there is already a table with that name in the target-database, it is not possible. So it is not possible to add to already existing data with that solution (great otherwise)
– Martin Meeser
Jan 25...
What is the correct way of using C++11's range-based for?
... copy ctor.
3 X copy ctor.
5 X copy ctor.
7 X copy ctor.
9
As it can be read from the output, copy constructor calls are made during range-based for loop iterations.
This is because we are capturing the elements from the container by value
(the auto x part in for (auto x : v)).
This is ineffici...
Why is “import *” bad?
...rted and can't easily find from which module a certain thing was imported (readability).
Because you can't use cool tools like pyflakes to statically detect errors in your code.
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How to use Global Variables in C#?
...ic static String FILE_NAME = "Output.txt"; // Modifiable
public static readonly String CODE_PREFIX = "US-"; // Unmodifiable
}
You can then retrieve the defined values anywhere in your code (provided it's part of the same namespace):
String code = Globals.CODE_PREFIX + value.ToString();
In o...
How to delete and replace last line in the terminal using bash?
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echo a carriage return with \r
seq 1 1000000 | while read i; do echo -en "\r$i"; done
from man echo:
-n do not output the trailing newline
-e enable interpretation of backslash escapes
\r carriage return
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How do I get the size of a java.sql.ResultSet?
...nn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY);
– BullyWiiPlaza
Feb 21 '17 at 13:55
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