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offsetting an html anchor to adjust for fixed header [duplicate]
...esn't depend on a parent element whose position is set to relative. Thanks for posting this.
– Eric Mill
May 27 '13 at 2:04
84
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Choose File Dialog [closed]
...te choose file dialog? Maybe one where you can filter out all files except for ones with specific extensions?
6 Answers
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On Duplicate Key Update same as insert
...e the same as your new ones, why would you need to update it in any case?
For eg. if your columns a to g are already set as 2 to 8; there would be no need to re-update it.
Alternatively, you can use:
INSERT INTO table (id,a,b,c,d,e,f,g)
VALUES (1,2,3,4,5,6,7,8)
ON DUPLICATE KEY
UPDATE a=a, b...
MongoDB atomic “findOrCreate”: findOne, insert if nonexistent, but do not update
as the title says, I want to perform a find (one) for a document, by _id, and if doesn't exist, have it created, then whether it was found or was created, have it returned in the callback.
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Push Notifications in Android Platform
... You can generally get activated very quickly, and it is being used for things like GMail so is know to work in production. Unfortunately their sample code for communicating with the server side aspect of C2DM is lacking. I've written up a tutorial for that aspect here blog.boxedice.com/2010/...
How do PHP sessions work? (not “how are they used?”)
...d in a cookie, but sent in URLs, too -- but that's quite rare, nowadays.
For more informations, you can take a look at the Session Handling section of the manual, that gives some useful informations.
For instance, there is a page about Passing the Session ID, which explains how the session id is ...
Best way to create unique token in Rails?
... ActiveRecord's secure token implementation.
-- Rails 4 & 3 --
Just for future reference, creating safe random token and ensuring it's uniqueness for the model (when using Ruby 1.9 and ActiveRecord):
class ModelName < ActiveRecord::Base
before_create :generate_token
protected
def...
How to programmatically set the layout_align_parent_right attribute of a Button in Relative Layout?
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Its working only for once, if I change alignment its not getting updated. May I know what can be the issue ??
– Shshank Bhong
Feb 21 '18 at 7:56
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WITH CHECK ADD CONSTRAINT followed by CHECK CONSTRAINT vs. ADD CONSTRAINT
I'm looking at the AdventureWorks sample database for SQL Server 2008, and I see in their creation scripts that they tend to use the following:
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MySQL Creating tables with Foreign Keys giving errno: 150
I am trying to create a table in MySQL with two foreign keys, which reference the primary keys in 2 other tables, but I am getting an errno: 150 error and it will not create the table.
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