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#1071 - Specified key was too long; max key length is 1000 bytes
...dex` (`parent_menu_id`,`menu_link`(50),`plugin`(50),`alias`(50))
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But what's the best prefix length for a given column? Here's a method to find out:
SELECT
ROUND(SUM(LENGTH(`menu_link`)<10)*100/COUNT(`menu_link`),2) AS pct_length_10,
ROUND(SUM(LENGTH(`menu_link`)<20)*100/COUNT(`menu_l...
AngularJS : Difference between the $observe and $watch methods
...oon as something in $scope changes in AngularJS. But couldn't understand what exactly is the difference between the two.
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How to write a cron that will run a script every day at midnight?
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Here's a good tutorial on what crontab is and how to use it on Ubuntu. Your crontab line will look something like this:
00 00 * * * ruby path/to/your/script.rb
(00 00 indicates midnight--0 minutes and 0 hours--and the *s mean every day of every mon...
The difference between bracket [ ] and double bracket [[ ]] for accessing the elements of a list or
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What is the reasoning behind using [[ vs [ to index with a single number vs vector? Why not just use [ for both? I guess you can use the [[ to get back a single entry, and [ with one index returns a list of length 1...but w...
How to set a default value for a datetime column to record creation time in a migration?
...:start_date, :datetime, default: -> { 'CURRENT_TIMESTAMP' } and this is what it loooks like in the schema.rb t.datetime "start_date", default: -> { "now()" } But when I created new record, it's not not being populated. Any idea why?
– Sandip Subedi
Jul 26...
how to implement a pop up dialog box in iOS
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Yup, a UIAlertView is probably what you're looking for. Here's an example:
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"No network connection"
message:@"You must be connected to the internet to...
How to get arguments with flags in Bash
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What does the --action* and --output-dir* cases do?
– Lucio
Jul 23 '14 at 0:22
1
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Debugging in Clojure? [closed]
What are best ways to Debug Clojure code, while using the repl?
14 Answers
14
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How to identify server IP address in PHP
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Perfect, What I am looking for. Thanks John
– Frank
Jan 7 '14 at 13:28
6
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How to unstage large number of files without deleting the content
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Actually, I was wondering what you meant by "pristine repo" (I don't feel lucky with google either).. So you meant an empty repo actually?
– inger
Oct 10 '13 at 11:46
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