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Why doesn't the example compile, aka how does (co-, contra-, and in-) variance work?
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slot.get will then throw an error at runtime as it was unsuccessful in converting an Animal to Dog (duh!).
In general mutability doesn't go well with co-variance and contra-variance. That is the reason why all Java collections are invariant.
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Search for string and get count in vi editor
...ore informations)
(This way, it works perfectly with "Search for visually selected text", as described in vim-wikia tip171)
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Git 'fatal: Unable to write new index file'
...talled new OS, moved my repos around and it was showing this exact error I selected the root folder and then added authenticated the user to check all
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How to make PowerShell tab completion work like Bash
...rs expansions for almost any command, wmi, comobject, assembly with a easy selection way!
– CB.
Nov 25 '11 at 10:04
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How to force garbage collector to run?
...et Framework does this automatically but just in case.
First, make sure to select what you want to erase, and then call the garbage collector:
randomClass object1 = new randomClass
...
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// Give a null value to the code you want to delete
object1 = null;
// Then call the garbage collector to eras...
How can I import a database with MySQL from terminal?
...mmand prompt (mysql>), then simply type source full_path_of_file (note: select database by command USE DATABASE_NAME before import).
– Ankit Sharma
May 28 '14 at 8:15
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Can I apply a CSS style to an element name?
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You can use the attribute selector,
input[name="goButton"] {
background: red;
}
<input name="goButton">
Be aware that it isn't supported in IE6.
Update: In 2016 you can pretty much use them as you want, since IE6 is dead. http...
Error : The service is invalid
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Agree with the above comment. Please select the answer given as the correct one.
– memmons
Nov 12 '12 at 22:20
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Making custom right-click context menus for my web-app
...nter;
list-style-type: none;
transition: all .3s ease;
user-select: none;
}
.custom-menu li:hover {
background-color: #DEF;
}
<!-- HTML -->
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.js"></script>
<...
Syntax highlighting code with Javascript [closed]
... want it to highlight, as well as wordwrap. You can copy and paste code by selecting it normally instead of having to open a raw view like many others. It can be further customised by using the HTML5 data attribute data-sh or via specifying options at initialisation. A great stable choice which is u...