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Please explain about insertable=false and updatable=false in reference to the JPA @Column annotation
...a field is annotated insertable=false, updatable=false , doesn't it mean that you cannot insert value nor change the existing value? Why would you want to do that?
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Test for existence of nested JavaScript object key
If I have a reference to an object:
57 Answers
57
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How do .gitignore exclusion rules actually work?
...nore problem on a large directory structure, but to simplify my question I have reduced it to the following.
5 Answers
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How to use GNU Make on Windows?
I installed MinGW and MSYS, added C:\MinGW\bin to PATH but I still can't run Makefile on Windows' cmd . I would like to run cmd.exe and there type, for example, make all but my cmd says that there is no such command.
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How to add /usr/local/bin in $PATH on Mac
When I do 'open .profile' in the terminal I have the following:
6 Answers
6
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Are loops really faster in reverse?
I've heard this quite a few times. Are JavaScript loops really faster when counting backward? If so, why? I've seen a few test suite examples showing that reversed loops are quicker, but I can't find any explanation as to why!
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Tab space instead of multiple non-breaking spaces (“nbsp”)?
Is it possible to insert a tab character in HTML instead of having to type   four times?
35 Answers
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What should my Objective-C singleton look like? [closed]
My singleton accessor method is usually some variant of:
26 Answers
26
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Is “double hashing” a password less secure than just hashing it once?
Is hashing a password twice before storage any more or less secure than just hashing it once?
16 Answers
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How to read file contents into a variable in a batch file?
This batch file releases a build from TEST to LIVE. I want to add a check constraint in this file that ensures there is an accomanying release document in a specific folder.
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