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Is null reference possible?

... References are not pointers. 8.3.2/1: A reference shall be initialized to refer to a valid object or function. [Note: in particular, a null reference cannot exist in a well-defined program, because the only way to create such a reference would be to bind it to the ...
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What is a stored procedure?

... a couple of ways. Most major DBMs support stored procedures; however, not all do. You will need to verify with your particular DBMS help documentation for specifics. As I am most familiar with SQL Server I will use that as my samples. To create a stored procedure the syntax is fairly simple: CRE...
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How to find out if an installed Eclipse is 32 or 64 bit version?

... Hit Ctrl+Alt+Del to open the Windows Task manager and switch to the processes tab. 32-bit programs should be marked with *32. share | improve this answer | ...
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How to download an entire directory and subdirectories using wget?

...nd I am only able to access the files through a browser. The base URLs for all the files is the same like 8 Answers ...
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How can I delete Docker's images?

... In order to delete all images, use the given command docker rmi $(docker images -q) In order to delete all containers, use the given command docker rm $(docker ps -a -q) Warning: This will destroy all your images and containers. It will n...
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Haml: Control whitespace around text

...t;a href='thing'>here</a>. precede: = precede '*' do %span.small Not really Produces: *<span class='small'>Not really</span> To answer the original question: I will first = succeed ',' do = link_to 'link somewhere', 'http://example.com' - if @condition then render...
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How to delete all the rows in a table using Eloquent?

... The reason MyModel::all()->delete() doesn't work is because all() actually fires off the query and returns a collection of Eloquent objects. You can make use of the truncate method, this works for Laravel 4 and 5: MyModel::truncate(); Th...
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Class JavaLaunchHelper is implemented in both. One of the two will be used. Which one is undefined [

...- the JDK is still broken. The bug report claims that the error is benign and should not cause any run-time problems, though one of the comments disagrees with that. In my own experience, I have been able to work without any problems using JDK 1.7.0_60 despite seeing the message. If this issue is ...
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How to decode HTML entities using jQuery?

...the approach from either that answer or Mark Amery's answer instead. Actually, try var decoded = $("<div/>").html(encodedStr).text(); share | improve this answer | ...
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How to hide first section header in UITableView (grouped style)

... Actually, a better implementation (less likely to break in the future) is to use CGFLOAT_MIN instead of a hard-coded value. In other words, don't return 1.0f or 0.1f instead, return CGFLOAT_MIN If Apple ever changes the minimum a...