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Setting an object to null vs Dispose()
...ou generally want to release them as soon as you can. You should implement IDisposable whenever your type "owns" an unmanaged resource, either directly (usually via an IntPtr) or indirectly (e.g. via a Stream, a SqlConnection etc).
Garbage collection itself is only about memory - with one little tw...
Objective-C declared @property attributes (nonatomic, copy, strong, weak)
... answered Mar 25 '12 at 12:58
iDhavaliDhaval
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...
Python module os.chmod(file, 664) does not change the permission to rw-rw-r— but -w--wx----
...sing Python module os, when I tried to change the permission of a file, I did not get the expected result. For example, I intended to change the permission to rw-rw-r--,
...
Assert an object is a specific type
...maba, 2012-09-13
*/
public class InstanceOfTest {
@Test
public void testInstanceOf() {
SubClass subClass = new SubClass();
assertThat(subClass, instanceOf(BaseClass.class));
}
}
share
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What's the difference between returning void and returning a Task?
... at various C# Async CTP samples I see some async functions that return void , and others that return the non-generic Task . I can see why returning a Task<MyType> is useful to return data to the caller when the async operation completes, but the functions that I've seen that have a retur...
What's the difference between ContentControl and ContentPresenter?
...ave a Content-property (for example, Button).
ContentPresenter is used inside control templates to display content.
ContentControl, when used directly (it's supposed to be used as a base class), has a control template that uses ContentPresenter to display it's content.
My rules of thumb (not appl...
Drawing an SVG file on a HTML5 canvas
...ssets/images/logo.svg as the first available SVG I found. Worked in FF. jsfiddle.net/Na6X5/331
– Thomas
Mar 10 '15 at 4:24
1
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git rebase without changing commit timestamps
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Update June 2014: David Fraser mentions in the comments a solution also detailed in "Change timestamps while rebasing git branch", using the option --committer-date-is-author-date (introduced initially in Jan. 2009 in commit 3f01ad6
Note that th...
Change a column type from Date to DateTime during ROR migration
... This answer is only partially correct, you can not use change_column inside change even on rails 4 or down migration will not work. You should use up/down no matter the version of rails.
– Alan Peabody
Jul 18 '14 at 18:31
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When splitting an empty string in Python, why does split() return an empty list while split('\n') re
...ode (with an argument such as \n) will produce the first empty field. Consider if you had written '\n'.split('\n'), you would get two fields (one split, gives you two halves).
Question: Is there any specific reason for such a difference?
This first mode is useful when data is aligned in colu...