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Rails migration for has_and_belongs_to_many join table
...in alphabetical order)
and then for rails 3 and below only, you need to edit your generated migration so an id field is not created:
create_table :students_teachers, :id => false do |t|
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Is MD5 still good enough to uniquely identify files?
... hashing a file still considered a good enough method to uniquely identify it given all the breaking of MD5 algorithm and security issues etc? Security is not my primary concern here, but uniquely identifying each file is.
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How do I set a background-color for the width of text, not the width of the entire element, using CS
...1 span {
background-color: green;
}
An inline element is as big as its contents is, so that should do it for you.
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Vagrant reverse port forwarding?
I'm working on a web services architecture. I've got some software that I need to run on the native host machine, not in Vagrant. But I'd like to run some client services on the guest.
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Application Loader: “Cannot proceed with delivery: an existing transporter instance is currently upl
I have been unable to overcome this error in Application Loader. I've quit, restarted, tried different computers - it's like the server is hung up on an op that I never initiated and it won't time out. Has anyone seen it before and beaten it?
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Object.getOwnPropertyNames vs Object.keys
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There is a little difference. Object.getOwnPropertyNames(a) returns all own properties of the object a. Object.keys(a) returns all enumerable own properties. It means that if you define your object properties without making some of them ...
Is there StartsWith or Contains in t sql with variables?
I am trying to detect if the server is running Express Edition.
3 Answers
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convert String to DateTime
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thanks. Missed, that I could give it my own format. Here's the working one: '%d/%b/%Y:%H:%M:%S'
– SkaveRat
Feb 4 '10 at 15:56
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What are the “loose objects” that the Git GUI refers to?
When I open the Git GUI , I get a popup message that refers to loose objects . I did git gc and that removed the message.
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How to execute XPath one-liners from shell?
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You should try these tools :
xmlstarlet : can edit, select, transform... Not installed by default, xpath1
xmllint : often installed by default with libxml2-utils, xpath1 (check my wrapper to have --xpath switch on very old releases and newlines delimited output (v < 2.9...