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Write lines of text to a file in R
... If I have several threads all of which I would like to add lines to the same file? (The issue being is that you can't have more then one connection to a file, If I am not mistaken) Thanks.
– Tal Galili
Mar 18 '10 at 15:02
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Find and replace with sed in directory and sub directories
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Your find should look like that to avoid sending directory names to sed:
find ./ -type f -exec sed -i -e 's/apple/orange/g' {} \;
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Float vs Decimal in ActiveRecord
Sometimes, Activerecord data types confuse me. Err, often. One of my eternal questions is, for a given case,
3 Answers
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regex.test V.S. string.match to know if a string matches a regular expression
Many times I'm using the string match function to know if a string matches a regular expression.
3 Answers
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Does SQLAlchemy have an equivalent of Django's get_or_create?
...et an object from the database if it already exists (based on provided parameters) or create it if it does not.
9 Answers
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How to make the overflow CSS property work with hidden as value
I am having a tough time with overflow: hidden .
5 Answers
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Get list of databases from SQL Server
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Execute:
SELECT name FROM master.sys.databases
This the preferred approach now, rather than dbo.sysdatabases, which has been deprecated for some time.
Execute this query:
SELECT name FROM master.dbo.sysdatabases
or if you prefer
EXEC ...
How to disable right-click context-menu in JavaScript [duplicate]
...ing to prevent 'View Source' or anything silly like that, but I'm making some custom context menus for certain elements.
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How to position a div in the middle of the screen when the page is bigger than the screen
Hi I'm using something similiar to the following to get a div positioned in the middle of the screen:
16 Answers
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How to model type-safe enum types?
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http://www.scala-lang.org/docu/files/api/scala/Enumeration.html
Example use
object Main extends App {
object WeekDay extends Enumeration {
type WeekDay = Value
val Mon, Tue, Wed, Thu, Fri, Sat, Sun = Value
}
import WeekDay._
def isWorkingDay...