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Difference between '..' (double-dot) and '…' (triple-dot) in range generation?
...ers gives a collection of integers, a Range is not a set of values, but simply a pair of start/end values:
(1..5).include?(5) #=> true
(1...5).include?(5) #=> false
(1..4).include?(4.1) #=> false
(1...5).include?(4.1) #=> true
(1..4).to_a == (1...5).to...
Run all SQL files in a directory
I have a number of .sql files which I have to run in order to apply changes made by other developers on an SQL Server 2005 database.
The files are named according to the following pattern:
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How to build for armv6 and armv7 architectures with iOS 5
In iOS5 Apple drops the armv6 architecture from the ARCHS_STANDARD_32_BIT .
6 Answers
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Time complexity of Sieve of Eratosthenes algorithm
From Wikipedia:
4 Answers
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What is the “N+1 selects problem” in ORM (Object-Relational Mapping)?
The "N+1 selects problem" is generally stated as a problem in Object-Relational mapping (ORM) discussions, and I understand that it has something to do with having to make a lot of database queries for something that seems simple in the object world.
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Restore a postgres backup file using the command line?
I'm new to postgresql, and locally, I use pgadmin3. On the remote server, however, I have no such luxury.
24 Answers
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How to set commands output as a variable in a batch file
Is it possible to set a statement's output of a batch file to a variable, for example:
7 Answers
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How to extract a string using JavaScript Regex?
I'm trying to extract a substring from a file with JavaScript Regex. Here is a slice from the file :
5 Answers
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Opening a folder in explorer and selecting a file
I'm trying to open a folder in explorer with a file selected.
11 Answers
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Remove grid, background color, and top and right borders from ggplot2
I would like to reproduce the plot immediately below by using ggplot2. I can come close, but cannot remove the top and right borders. Below I present several attempts using ggplot2, including several suggestions found on or via Stackoverflow. Unfortunately I have not been able to get those sugges...