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Fast way to discover the row count of a table in PostgreSQL
I need to know the number of rows in a table to calculate a percentage. If the total count is greater than some predefined constant, I will use the constant value. Otherwise, I will use the actual number of rows.
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Check if a string contains a string in C++
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}
std::string randomString( size_t len)
{
static const char charset[] = "abcdefghijklmnopqrstuvwxyz";
static const int charsetLen = sizeof(charset) - 1;
static std::default_random_engine rng(std::random_device{}());
static std::uniform_int_distribution<> dist...
Remove all occurrences of a value from a list?
In Python remove() will remove the first occurrence of value in a list.
23 Answers
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How to write a switch statement in Ruby
How do I write a switch statement in Ruby?
24 Answers
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How to remove duplicate white spaces in string using Java?
How to remove duplicate white spaces (including tabs, newlines, spaces, etc...) in a string using Java?
9 Answers
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Insert line after first match using sed
For some reason I can't seem to find a straightforward answer to this and I'm on a bit of a time crunch at the moment. How would I go about inserting a choice line of text after the first line matching a specific string using the sed command. I have ...
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Ruby max integer
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How to flush output of print function?
...print() function to flush without the need to use sys.stdout.flush(); just set the "flush" keyword argument to true. From the documentation:
print(*objects, sep=' ', end='\n', file=sys.stdout, flush=False)
Print objects to the stream file, separated by sep and followed by end. sep, end and...
Python try-else
What is the intended use of the optional else clause of the try statement?
21 Answers
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Add a new element to an array without specifying the index in Bash
...c 23 '09 at 9:02
Etienne DechampsEtienne Dechamps
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