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Can a java file have more than one class?
What is the purpose of having more than one class in a Java file ? I am new to Java.
18 Answers
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LF will be replaced by CRLF in git - What is that and is it important? [duplicate]
...m a unix system they will only have an LF.
If you are a single developer working on a windows machine, and you don't care that git automatically replaces LFs to CRLFs, you can turn this warning off by typing the following in the git command line
git config core.autocrlf true
If you want to make ...
Combine two or more columns in a dataframe into a new column with a new name
For example if I have this:
8 Answers
8
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How many String objects will be created when using a plus sign?
...e = "1";
const String two = "2";
const String result = one + two + "34";
or as literals, as in the original question:
String result = "1" + "2" + "3" + "4";
then the compiler will optimize away those + signs. It's equivalent to:
const String result = "1234";
Furthermore, the compiler will r...
iOS detect if user is on an iPad
...ser is using an iPad in my UIViewController and then change something accordingly?
16 Answers
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C# member variable initialization; best practice?
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In terms of performance, there is no real difference; field initializers are implemented as constructor logic. The only difference is that field initializers happen before any "base"/"this" constructor.
The constructor approach can be used ...
Add column to SQL Server
...int column existing rows will be
given a NULL value for the new column*/
Or
ALTER TABLE YourTable
ADD Bar INT NOT NULL DEFAULT(0) /*Adds a new int column existing rows will
be given the value zero*/
In SQL Server 2008 the first one is ...
Render a string in HTML and preserve spaces and linebreaks
... spaces and new lines. When it is rendered the new lines and spaces are ignored by the html. I would like to encode those spaces and new lines so that they aren't ignored.
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BindingFlags.IgnoreCase not working for Type.GetProperty()?
...flags you need to provide all the info so that the property can be found. For example: BindingFlags.IgnoreCase | BindingFlags.Public | BindingFlags.Instance
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SQL function as default parameter value?
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Default value for stored procedures parameter have to be constants.
You'd need to do the following...
ALTER Procedure [dbo].[my_sp]
@currentDate datetime = null
AS
IF @currentDate is null
SET @currentDate = getdate()
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