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How to exit a 'git status' list in a terminal?
I'm new to Git and the terminal. How can I exit a listing mode generated by the git status command?
14 Answers
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Is null check needed before calling instanceof?
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No, a null check is not needed before using instanceof.
The expression x instanceof SomeClass is false if x is null.
From the Java Language Specification, section 15.20.2, "Type comparison operator instanceof":
"At run time, the result of the
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MySql: Tinyint (2) vs tinyint(1) - what is the difference?
I knew boolean in mysql as tinyint (1) .
4 Answers
4
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“x not in y” or “not x in y”
When testing for membership, we can use:
6 Answers
6
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How do I open an old MVC project in Visual Studio 2012 or Visual Studio 2013?
...dio 2013 is actually pretty easy to accomplish with two steps. In fact, as bytebender’s comment indicates, these same steps should apply to and work for MVC 1 projects. However, I haven’t tested them and therefore cannot guarantee that they do in fact work.
Assuming that you have not already do...
How do I increase the number of displayed lines of a Java stack trace dump?
Is there a way to make Throwable.printStackTrace(PrintStream s) print the full stack trace, so that I can see beyond the final line of "... 40 more" ?
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Simplest way to serve static data from outside the application server in a Java web application
I have a Java web application running on Tomcat. I want to load static images that will be shown both on the Web UI and in PDF files generated by the application. Also new images will be added and saved by uploading via the Web UI.
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Join vs. sub-query
I am an old-school MySQL user and have always preferred JOIN over sub-query. But nowadays everyone uses sub-query, and I hate it; I don't know why.
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How to list all methods for an object in Ruby?
How do I list all the methods that a particular object has access to?
8 Answers
8
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Why does Math.round(0.49999999999999994) return 1?
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Summary
In Java 6 (and presumably earlier), round(x) is implemented as floor(x+0.5).1 This is a specification bug, for precisely this one pathological case.2 Java 7 no longer mandates this broken implementation.3
The problem
0.5+0.49999999999999994 i...