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Save ArrayList to SharedPreferences
... ArrayList with custom objects. Each custom object contains a variety of strings and numbers. I need the array to stick around even if the user leaves the activity and then wants to come back at a later time, however I don't need the array available after the application has been closed completely...
How using try catch for exception handling is best practice
...e
try
{
...
}
catch(Exception ex)
{
throw new ApplicationException(string.Format("I cannot write the file {0} to {1}", fileName, directoryName), ex);
}
There is a lot to do with exception handling (Custom Exceptions) but thoses rules I try to keep in mind are enough for the simple applicat...
What ReSharper 4+ live templates for C# do you use? [closed]
...
Check if a string is null or empty.
If you're using .Net 4 you may prefer to use string.IsNullOrWhiteSpace().
Shortcut: sne
Available in: C# 2.0+ where expression is allowed.
string.IsNullOrEmpty($VAR$)
Macro properties:
VAR - suggest...
history.replaceState() example?
...es this parameter, although it may use it in the future. Passing the empty string here should be safe against future changes to the method. Alternatively, you could pass a short title for the state to which you're moving.
sh...
How do I get the number of elements in a list?
...e number of items) of an object. The argument may be a sequence (such as a string, bytes, tuple, list, or range) or
a collection (such as a dictionary, set, or frozen set).
len is implemented with __len__, from the data model docs:
object.__len__(self)
Called to implement the built-in funct...
Absolute positioning ignoring padding of parent
...in that both elements can have their own independent padding) are:
Add an extra relatively positioned div (with no padding) around the absolutely positioned div. That new div will respect the padding of its parent, and the absolutely positioned div will then fill it.
The downside, of course, is tha...
How to inherit constructors?
...t annoying one for me is custom exceptions - Sub New(), Sub New(Message As String), Sub New(Message As String, InnerEx as Exception), Sub New(Info As Serialization.SerializationInfo, Context As Serialization.StreamingContext)... Yawn `
– Basic
May 20 '13 at 19:...
How to implement an ordered, default dict? [duplicate]
...', None)])
And if your keys are single characters, you can just pass one string:
OrderedDict.fromkeys('abc')
This has the same output as the two examples above.
You can also pass a default value as the second arg to OrderedDict.fromkeys(...).
...
How does the Windows Command Interpreter (CMD.EXE) parse scripts?
...e concepts that are important throughout this phase.
A token is simply a string of characters that is treated as a unit.
Tokens are separated by token delimiters. The standard token delimiters are <space> <tab> ; , = <0x0B> <0x0C> and <0xFF>
Consecutive token delimite...
SQL Server Regular expressions in T-SQL
...t it gives you the basics.
(From Books Online)
Wildcard Meaning
% Any string of zero or more characters.
_ Any single character.
[ ] Any single character within the specified range
(for example, [a-f]) or set (for example, [abcdef]).
[^] Any single character not within the specified ran...