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What is the difference between Collections.emptyList() and Collections.EMPTY_LIST
In Java, we have Collections.emptyList() and Collections.EMPTY_LIST . Both have the same property:
4 Answers
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How do I UPDATE from a SELECT in SQL Server?
...ue) then change the ON statement to something like ON Table.id = @IdToEdit AND other_table.id = @NewValue
– Trisped
Oct 24 '12 at 18:41
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Export a stash to another computer
... stash show "stash@{0}" -p > patch instead of the OP's second shell command.
– Tim Arnold
Mar 16 '16 at 15:03
1
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Retrieving the output of subprocess.call() [duplicate]
...Popen() instead. Then you can pass subprocess.PIPE for the stderr, stdout, and/or stdin parameters and read from the pipes by using the communicate() method:
from subprocess import Popen, PIPE
p = Popen(['program', 'arg1'], stdin=PIPE, stdout=PIPE, stderr=PIPE)
output, err = p.communicate(b"input ...
How do you get the index of the current iteration of a foreach loop?
... collection, which will return an Enumerator.
This Enumerator has a method and a property:
MoveNext()
Current
Current returns the object that Enumerator is currently on, MoveNext updates Current to the next object.
The concept of an index is foreign to the concept of enumeration, and cannot be don...
Serialize an object to XML
...encapsulating the StringWriter, it is utilizing your passed-in StringWriterand has no expectation/responsibility to dispose of it. Further StringWriter is outside XmlWriter's scope, you may still want it when XmlWriter is disposed, it would be poor behavior for XmlWriter to dispose your StringWriter...
Func delegate with no return type
... the Action delegates return void.
Func<TResult> takes no arguments and returns TResult:
public delegate TResult Func<TResult>()
Action<T> takes one argument and does not return a value:
public delegate void Action<T>(T obj)
Action is the simplest, 'bare' delegate:
pu...
What is the id( ) function used for?
I read the Python 2 docs and noticed the id() function:
13 Answers
13
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What's the best way to put a c-struct in an NSArray?
... to store c-structures in an NSArray ? Advantages, disadvantages, memory handling?
11 Answers
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How to run Rake tasks from within Rake tasks?
...y_invoked state, allowing the task to
then be executed again, dependencies and all:
Rake::Task["build"].reenable
Rake::Task["build"].invoke
Note that dependencies already invoked are not automatically re-executed unless they are re-enabled. In Rake >= 10.3.2, you can use the following to re-ena...