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Scanner vs. BufferedReader
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Scanner is used for parsing tokens from the contents of the stream while BufferedReader just reads the stream and does not do any special parsing.
In fact you can pass a BufferedReader to a scanner as the source of characters to parse.
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Can dplyr package be used for conditional mutating?
...= 4, 3, NA)))
Added - if_else: Note that in dplyr 0.5 there is an if_else function defined so an alternative would be to replace ifelse with if_else; however, note that since if_else is stricter than ifelse (both legs of the condition must have the same type) so the NA in that case would have to be...
Handle ModelState Validation in ASP.NET Web API
I was wondering how I can achieve model validation with ASP.NET Web API. I have my model like so:
10 Answers
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jQuery UI Dialog with ASP.NET button postback
I have a jQuery UI Dialog working great on my ASP.NET page:
17 Answers
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逆向工程——二进制炸弹(CSAPP Project) - 操作系统(内核) - 清泛网 - 专注...
...出传入的整数应该>0，否则炸弹爆炸。而这个整数又作为func4的参数传入。在0x8048ca6的指令中，我们可以确定func4(-0x4(%ebp))=144才能过关。
那么深入一下func4的运作机理就是很有必要的，如下图给出了func4：
在上图中1作为func4的...
Difference between fold and reduce?
... but takes an extra parameter. Is there a legitimate reason for these two functions to exist or they are there to accommodate people with different backgrounds? (E.g.: String and string in C#)
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ANTLR: Is there a simple example?
...uce any error message, and the files ExpLexer.java, ExpParser.java and Exp.tokens should now be generated.
To see if it all works properly, create this test class:
import org.antlr.runtime.*;
public class ANTLRDemo {
public static void main(String[] args) throws Exception {
ANTLRStrin...
Uploading Files in ASP.net without using the FileUpload server control
How can I get an ASP.net web form (v3.5) to post a file using a plain old <input type="file" /> ?
10 Answers
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What's the difference between OpenID and OAuth?
...mited to the 'this is who I am' assertion, while OAuth provides an 'access token' that can be exchanged for any supported assertion via an API).
2. Features
Both protocols provide a way for a site to redirect a user somewhere else and come back with a verifiable assertion. OpenID provides an identit...
How can I run a function from a script in command line?
I have a script that has some functions.
9 Answers
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