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What does principal end of an association means in 1:1 relationship in Entity framework

... In one-to-one relation one end must be principal and second end must be dependent. Principal end is the one which will be inserted first and which can exist without the dependent one. Dependent end is the one which must be inserted after the principal because it has foreign...
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Can I mask an input text in a bat file?

... Up to XP and Server 2003, you can make use of another included tool (VBScript) - the following two scripts do the job you want. First, getpwd.cmd: @echo off <nul: set /p passwd=Password: for /f "delims=" %%i in ('cscript /nologo...
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Insert new column into table in sqlite?

...ty , rate . Now I need to add a new column COLNew in between the name and qty columns. How do I add a new column in between two columns? ...
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Creating an abstract class in Objective-C

...ct class - by making the methods/ selectors call doesNotRecognizeSelector: and therefore raise an exception making the class unusable. For example: - (id)someMethod:(SomeObject*)blah { [self doesNotRecognizeSelector:_cmd]; return nil; } You can also do this for init. ...
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How to “pretty” format JSON output in Ruby on Rails

...client-side debugging as any tools worth their salt (eg. Firebug) already handle prettyprinting JSON. – lambshaanxy Sep 20 '11 at 3:37 8 ...
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Go to Matching Brace in Visual Studio?

...Visual Studio: Put your cursor before or after the brace (your choice) and then press CTRL + ]. It works with parentheses ( ), brackets [ ] and braces { }. From now on you don’t need to play Where’s Waldo? to find that brace. On MacOS, use CMD + SHIFT + \ ...
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setState vs replaceState in React.js

I am new to React.js Library and I was going over some of the tutorials and I came across: 4 Answers ...
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Reloading module giving NameError: name 'reload' is not defined

...ave already imported in Python 3. I know that you only need to import once and executing the import command again won't do anything. ...
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Tracing XML request/responses with JAX-WS

...ublished with JAX-WS reference implementation (the one included in JDK 1.5 and better) ? Being able to do that via code is what I need to do. Just having it logged to a file by clever logging configurations would be nice but enough. ...
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How do I update devDependencies in NPM?

...he local modules, run npm update --save-dev Alternatively, the same command to save time npm update -D You can view the full detail of update, or any command for that matter through npm help <cmd> share ...