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How do I programmatically change file permissions?
In Java, I'm dynamically creating a set of files and I'd like to change the file permissions on these files on a linux/unix file system. I'd like to be able to execute the Java equivalent of chmod . Is that possible Java 5? If so, how?
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Java optional parameters
...e optional parameter, but you would need to check the length of the array, etc. so it's not super clean :| If you want "one parameter" optional parameter then you may as well just declare two methods (one overloaded doSomething() { doSomething(true); } no arrays to deal with, no ambiguity
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Piping buffer to external command in Vim
...rnal stdin from the command line:
vim -es +"w >> /dev/stdout" -cq! /etc/hosts
It's useful for scripting purposes.
For more command-line tricks, check:
How to write whole buffer to standard output from the command line?
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How do I test a file upload in rails?
I have a controller which is responsible for accepting JSON files and then processing the JSON files to do some user maintenance for our application. In user testing the file upload and processing works, but of course I would like to automate the process of testing the user maintenance in our testin...
Get names of all files from a folder with Ruby
I want to get all file names from a folder using Ruby.
19 Answers
19
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Why does JPA have a @Transient annotation?
...ystem uses tools to generate entities from database. (Hibernate has those, etc...)
Now, suppose that by your business logic you need a particular field NOT to be persisted. You have to "configure" your entity in a particular way.
While Transient keyword works on an object - as it behaves within a j...
Why does .NET foreach loop throw NullRefException when collection is null?
...an be extended further in interesting ways (for loops, reversing, leaping, etc). Thanks for sharing.
– Lara
Feb 16 '17 at 17:08
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How do detect Android Tablets in general. Useragent?
...h for just "Mobile" - there could be devices with names, say "HTC Mobile", etc. I think this is the recommended approach.
– Suman
Apr 30 '12 at 16:25
1
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How to save/restore serializable object to/from file?
...;param name="serializableObject"></param>
/// <param name="fileName"></param>
public void SerializeObject<T>(T serializableObject, string fileName)
{
if (serializableObject == null) { return; }
try
{
XmlDocument xmlDocument ...
How to stop tracking and ignore changes to a file in Git?
I have cloned a project that includes some .csproj files. I don't need/like my local csproj files being tracked by Git (or being brought up when creating a patch), but clearly they are needed in the project.
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