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When to use EntityManager.find() vs EntityManager.getReference() with JPA
...nager.getReference(LObj.getClass(), LObj.getId()) to get a database entity and then pass the returned object to be persisted in another table.
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How can I recursively find all files in current and subfolders based on wildcard matching?
How can I recursively find all files in current and subfolders based on wildcard matching?
16 Answers
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Java NIO FileChannel versus FileOutputstream performance / usefulness
... nio FileChannel versus normal FileInputStream/FileOuputStream to read and write files to filesystem. I observed that on my machine both perform at the same level, also many times the FileChannel way is slower. Can I please know more details comparing these two methods. Here is the code I used...
Execute command without keeping it in history [closed]
I want to execute some commands but don't want to store them in the command history. So that nobody will be able to search it in the .bash_history file.
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Differences between std::make_unique and std::unique_ptr with new
...that means that this is no longer unsafe. See C++ committee papers P0400R0 and P0145R3.
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How do I get the width and height of a HTML5 canvas?
How can i get the width and height of the canvas element in JavaScript?
8 Answers
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How do I get the find command to print out the file size with the file name?
If I issue the find command as follows:
15 Answers
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Stop the 'Ding' when pressing Enter
I have a very simple Windows Forms Application. And, in Windows (or, atleast Windows Forms Applications), when you press Enter while inside a Single-line TextBox Control, you hear a Ding. It's an unpleasent sound, that indicated you cannot enter a newline, because it is a single-line TextBox.
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What is std::move(), and when should it be used?
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Wikipedia Page on C++11 R-value references and move constructors
In C++11, in addition to copy constructors, objects can have move constructors.
(And in addition to copy assignment operators, they have move assignment operators.)
The move constructor is used instead...
Why do I get “unresolved external symbol” errors when using templates? [duplicate]
When I write C++ code for a class using templates and split the code between a source (CPP) file and a header (H) file, I get a whole lot of "unresolved external symbol" errors when it comes to linking the final executible, despite the object file being correctly built and included in the linking. ...