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Changing the maximum length of a varchar column?
I'm trying to update the length of a varchar column from 255 characters to 500 without losing the contents. I've dropped and re-created tables before but I've never been exposed to the alter statement which is what I believe I need to use to do this. I found the documentation here: ALTER TABLE (Tra...
Legality of COW std::string implementation in C++11
It had been my understanding that copy-on-write is not a viable way to implement a conforming std::string in C++11, but when it came up in discussion recently I found myself unable to directly support that statement.
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Disable ActiveRecord for Rails 4
I want to disable ActiveRecord in Rails 4. I did the following in config/application.rb
8 Answers
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How to sum up an array of integers in C#
Is there a better shorter way than iterating over the array?
12 Answers
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How to make an Android Spinner with initial text “Select One”?
I want to use a Spinner that initially (when the user has not made a selection yet) displays the text "Select One". When the user clicks the spinner, the list of items is displayed and the user selects one of the options. After the user has made a selection, the selected item is displayed in the Spi...
No Exception while type casting with a null in java
Why there is no exception in this statement?
10 Answers
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How do I expire a PHP session after 30 minutes?
I need to keep a session alive for 30 minutes and then destroy it.
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How do I restore a dump file from mysqldump?
I was given a MySQL database file that I need to restore as a database on my Windows Server 2008 machine.
17 Answers
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How to clone a Date object?
Assigning a Date variable to another one will copy the reference to the same instance. This means that changing one will change the other.
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How do I find files that do not contain a given string pattern?
How do I find out the files in the current directory which do not contain the word foo (using grep )?
16 Answers
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