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What's the difference between Ruby's dup and clone methods?
..., name: "Favorites">
clone creates a new object with the same id, so all the changes made to that new object will overwrite the original record if hitting .save
category2 = category.clone
#=> #<Category id: 1, name: "Favorites">
...
Configure apache to listen on port other than 80
...ttpd.conf here fileuploading.net/860467 nothing like WAMP, Xampp, Appserv. All I have done is compiling apache, tomcat and jk connector from source and trying my best to make them work together.
– vivek.m
Oct 15 '10 at 11:06
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Read values into a shell variable from a pipe
...e, what worked for me was (a different example but similar usage): pip install -U echo $(ls -t *.py | head -1). In case, someone ever has a similar problem and stumbles upon this answer like me.
– ivan_bilan
Mar 14 '19 at 15:25
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Prevent a webpage from navigating away using JavaScript
...
Using onunload allows you to display messages, but will not interrupt the navigation (because it is too late). However, using onbeforeunload will interrupt navigation:
window.onbeforeunload = function() {
return "";
}
Note: An empty st...
Java: Path vs File
...e modern java.nio.file lib, and does everything java.io.File can, but generally in a better way, and more.
For new projects, use Path.
And if you ever need a File object for legacy, just call Path#toFile()
Migrating from File to Path
This Oracle page highlights differences, and maps java.io.Fil...
How can I resize an image dynamically with CSS as the browser width/height changes?
...fix this, you need to add width:auto\9 for IE8.
source: http://webdesignerwall.com/tutorials/responsive-design-with-css3-media-queries
CSS:
img {
max-width: 100%;
height: auto;
width: auto\9; /* ie8 */
}
And if you want to enforce a fixed max width of the image, just place it inside a ...
.Contains() on a list of custom class objects
...eria, use Find() with a suitable predicate (lamda expression)... I'm actually arguing that you don't touch the comparison code AT ALL - you just call the right method on the list for the task you're trying to accomplish...
– Martin Milan
Apr 13 '10 at 12:01
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How can I build XML in C#?
...riter.WriteElementString("Nested", "data");
writer.WriteEndElement();
Finally, via XmlSerializer:
[Serializable]
public class Foo
{
[XmlAttribute]
public string Bar { get; set; }
public string Nested { get; set; }
}
...
Foo foo = new Foo
{
Bar = "some & value",
Nested = "d...
Need to log asp.net webapi 2 request and response body to a database
...
Does the call to await request.Content.ReadAsStringAsync(); not result in an error saying that the request stream has already been read in certain cirumstances?
– Gavin
Dec 7 '16 at 16:21
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Running a Haskell program on the Android OS
...ndroid NDK which comes with a GCC port for ARM architectures. JHC can trivially do this with a very small inf style file which describes the platform (word size, c-compiler, etc) I've done this with the Wii homebrew dev kit and it was quite easy. However jhc still has some stability issues with comp...