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Check if a String contains numbers Java
I'm writing a program where the user enters a String in the following format:
14 Answers
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What's the best way to validate an XML file against an XSD file?
... if you use File
import java.io.IOException;
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URL schemaFile = new URL("http://host:port/filename.xsd");
// webapp example xsd:
// URL schemaFile = new URL("http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd");
// local file example:
// File schemaFile = new File("/location/to/localfile.xsd"); // e...
Reference: Comparing PHP's print and echo
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Repeat string to certain length
What is an efficient way to repeat a string to a certain length? Eg: repeat('abc', 7) -> 'abcabca'
13 Answers
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What is “2's Complement”?
I'm in a computer systems course and have been struggling , in part, with Two's Complement . I want to understand it but everything I've read hasn't brought the picture together for me. I've read the wikipedia article and various other articles, including my text book .
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Statistics: combinations in Python
I need to compute combinatorials (nCr) in Python but cannot find the function to do that in math , numpy or stat libraries. Something like a function of the type:
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What GRANT USAGE ON SCHEMA exactly do?
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rvm installation not working: “RVM is not a function”
...terminal after this setting the flag.
Sometimes it is required to set the command to /bin/bash --login.
For remote connections it is important to understand the differene between running interactive ssh session and executing single commands.
While running ssh server and then working with the se...
Refactoring in Vim
...g but I may try to do it when editing some one else's source. How do you accomplish such a trivial task across multiple files in Vim?
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Get Slightly Lighter and Darker Color from UIColor
I was looking to be able to turn any UIColor into a gradient. The way I am intending to do this is by using Core Graphics to draw a gradient. What I am trying to do is to get a color, lets say:
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