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Why do we check up to the square root of a prime number to determine if it is prime?
To test whether a number is prime or not, why do we have to test whether it is divisible only up to the square root of that number?
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Is there a way to change the spacing between legend items in ggplot2?
Is there a way to change the spacing between legend items in ggplot2? I currently have
8 Answers
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In C#, What is a monad?
There is a lot of talk about monads these days. I have read a few articles / blog posts, but I can't go far enough with their examples to fully grasp the concept. The reason is that monads are a functional language concept, and thus the examples are in languages I haven't worked with (since I haven'...
Can I use git diff on untracked files?
Is it possible to ask git diff to include untracked files in its diff output, or is my best bet to use git add on the newly created files and the existing files I have edited, then use:
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What do the makefile symbols $@ and $< mean?
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What is the Oracle equivalent of SQL Server's IsNull() function?
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Convert SQLITE SQL dump file to POSTGRESQL
...that I was looking for a more automated method. I looked up the wiki docs:
https://wiki.postgresql.org/wiki/Converting_from_other_Databases_to_PostgreSQL
and discovered pgloader. Pretty cool application and it's relatively easy to use. You can convert the flat SQLite file into a usable PostgreSQL da...
How to get current timestamp in string format in Java? “yyyy.MM.dd.HH.mm.ss”
How to get timestamp in string format in Java? "yyyy.MM.dd.HH.mm.ss"
7 Answers
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Seeking clarification on apparent contradictions regarding weakly typed languages
I think I understand strong typing , but every time I look for examples for what is weak typing I end up finding examples of programming languages that simply coerce/convert types automatically.
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Do AJAX requests retain PHP Session info?
...ference between an AJAX request and a regular page request. They are both HTTP requests, and they both contain cookie information in the header in the same way.
From the client side, the same cookies will always be sent to the server whether it's a regular request or an AJAX request. The Javascri...