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UPDATE and REPLACE part of a string
I've got a table with two columns, ID and Value . I want to change a part of some strings in the second column.
9 Answer...
What's the difference between size_t and int in C++?
...endly Wikipedia:
The stdlib.h and stddef.h header files define a datatype called size_t which is used to represent the size of an object. Library functions that take sizes expect them to be of type size_t, and the sizeof operator evaluates to size_t.
The actual type of size_t is platform-dependent;...
Rails Migration: Remove constraint
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Not sure you can call t.address? Anyway... I would use change_column like so
change_column :users, :address, :string, :null => true
Docs...
http://apidock.com/rails/ActiveRecord/ConnectionAdapters/SchemaStatements/change_column
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rspec 3 - stub a class method
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@sixty4bit Is there a reason you can't call it with arguments?
– David Moles
Sep 3 '15 at 16:00
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Reference alias (calculated in SELECT) in WHERE clause
...sion is extremely complex (or costly to calculate) you should probably consider a computed column (and perhaps persisted) instead, especially if a lot of queries refer to this same expression.
PS your fears seem unfounded. In this simple example at least, SQL Server is smart enough to only perform ...
Get Android Phone Model programmatically
...ould like to know if there is a way for reading the Phone Model programmatically in Android.
16 Answers
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When to use single quotes, double quotes, and backticks in MySQL
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Backticks are to be used for table and column identifiers, but are only necessary when the identifier is a MySQL reserved keyword, or when the identifier contains whitespace characters or characters beyond a limited set (see below) It is often recommended to avoid using ...
Center a button in a Linear layout
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If you want to center an item in the middle of the screen don't use a LinearLayout as these are meant for displaying a number of items in a row.
Use a RelativeLayout instead.
So replace:
android:layout_gravity="center_vertical|center_horizontal"
for the re...
Cookies vs. sessions
...hat time, I preferred cookies (and who does not like cookies?!) and just said: "who cares? I don't have any good deal with storing it in my server", so, I went ahead and used cookies for my bachelor graduation project. However, after doin' the big part of my app, I heard that for the particular case...
How do I tell git to always select my local version for conflicted merges on a specific file?
...e, since it is a bad example), you would achieve that with a custom script called through merges.
Git will call that script because you will have define a gitattributes value, which defines a custom merge driver.
The "custom merge driver" is, in this case, a very simple script which basically will ...