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What is the difference between Java RMI and RPC?
...mantics, on the other side, RMI is a Java based technology and it's object oriented.
With RPC you can just call remote functions exported into a server, in RMI you can have references to remote objects and invoke their methods, and also pass and return more remote object references that can be dist...
Why rgb and not cmy? [closed]
Seeing as how the three primary colors are cyan, magenta and yellow (CMY), why do monitors and almost all the GUI components out there use red, green and blue (RGB)? (If I'm not mistaken, printers use the CMYK model.)
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What is __pycache__?
...preter compiles it to bytecode first (this is an oversimplification) and stores it in the __pycache__ folder. If you look in there you will find a bunch of files sharing the names of the .py files in your project's folder, only their extensions will be either .pyc or .pyo. These are bytecode-compile...
Java exception not caught?
I have a small theoretical problem with try-catch constructions.
6 Answers
6
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Getting unique items from a list [duplicate]
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Use a HashSet<T>. For example:
var items = "A B A D A C".Split(' ');
var unique_items = new HashSet<string>(items);
foreach (string s in unique_items)
Console.WriteLine(s);
prints
A
B
D
C
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Execute command without keeping it in history [closed]
I want to execute some commands but don't want to store them in the command history. So that nobody will be able to search it in the .bash_history file.
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(Built-in) way in JavaScript to check if a string is a valid number
...able (including a string) is a number, check if it is not a number:
This works regardless of whether the variable content is a string or number.
isNaN(num) // returns true if the variable does NOT contain a valid number
Examples
isNaN(123) // false
isNaN('123') // false
is...
Java Replacing multiple different substring in a string at once (or in the most efficient way)
...ing in the most efficient way.
is there another way other then the brute force way of replacing each field using string.replace ?
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Disable a Button
... a button ( UIButton ) on iOS after it is clicked. I am new to developing for iOS but I think the equivalent code on objective - C is this:
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Is errno thread-safe?
...no; so my question is, is it safe to check errno value after some calls or use perror() in multi-threaded code. Is this a thread safe variable? If not, then whats the alternative ?
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