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How can I format a decimal to always show 2 decimal places?
...ntize(TWOPLACES, context=Context(traps=[Inexact]))
Traceback (most recent call last):
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Inexact: None
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Q. Once I have valid two place inputs, how do I maintain that invariant throughout an application?
If you need the answer to that (along with lots of other useful inf...
How to drop columns using Rails migration
...ange method that can be reverted* you'll need to inform the data type (and all other field modifiers), so if you rollback that migration, the field can be correctly recreated. * When I say reverted, that's in terms of database structure, of course, data from that column obviously will be lost.
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Open multiple Eclipse workspaces on the Mac
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EDIT: Milhous's answer seems to be the officially supported way to do this as of 10.5. Earlier version of OS X and even 10.5 and up should still work using the following instructions though.
Open the command line (Terminal)
Navigate to your Eclipse installation fold...
How do I specify the exit code of a console application in .NET?
...eturn it from Main if you declare your Main method to return int.
You can call Environment.Exit(code).
You can set the exit code using properties: Environment.ExitCode = -1;. This will be used if nothing else sets the return code or uses one of the other options above).
Depending on your applicat...
Javascript Array.sort implementation?
...the JavaScript Array#sort() function use? I understand that it can take all manner of arguments and functions to perform different kinds of sorts, I'm simply interested in which algorithm the vanilla sort uses.
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Is there a way to access the “previous row” value in a SELECT statement?
... the previous value given the current one (EG, you want to order alphabetically) then I don't know of a way to do that in standard SQL, but most SQL implementations will have extensions to do it.
Here is a way for SQL server that works if you can order rows such that each one is distinct:
select...
What's the difference between isset() and array_key_exists()? [duplicate]
How do the following two function calls compare:
8 Answers
8
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How to set up fixed width for ?
... you can apply this only in the <head> in each <th> tag and all rows will match
– Diego Fernando Murillo Valenci
Apr 20 '15 at 20:48
7
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Changing navigation bar color in Swift
I am using a Picker View to allow the user to choose the colour theme for the entire app.
30 Answers
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XPath - Selecting elements that equal a value
...the string value of an element as the concatenation (in document order) of all of its text-node descendents.
This explains the "strange results".
"Better" results can be obtained using the expressions below:
//*[text() = 'qwerty']
The above selects every element in the document that has at lea...