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Please explain about insertable=false and updatable=false in reference to the JPA @Column annotation
If 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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Temporarily switch working copy to a specific Git commit
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I think you mean git checkout <original_branch>. git checkout HEAD is effectively a NOOP
– Abe Voelker
Apr 19 '12 at 14:46
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Adding an onclick function to go to url in JavaScript?
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Not completely sure I understand the question, but do you mean something like this?
$('#something').click(function() {
document.location = 'http://somewhere.com/';
} );
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Android: When is onCreateOptionsMenu called during Activity lifecycle?
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@commonsware - That means on devices and apps which doesn't have action bar. Menu will show up even if onCreateOptionsMenu doesn't have item visible?
– NinjaCoder
Dec 20 '13 at 15:09
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Block Comments in Clojure
... the REPL).
In this case I like to wrap the code with (fn [] .....) which means that it still gets compiled, it just doesn't get called.
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Using CookieContainer with WebClient class
....RegisterPrefix("http://example.com/", MyWebRequestCreator.MyHttp);
That means ANY webrequest that goes to example.com will now use your custom webrequest creator, including the standard webclient. This approach means you don't have to touch all you code. You just call the register prefix once and...
What is RSS and VSZ in Linux memory management
...167472
Killed
Exit status:
137
which by the 128 + signal number rule means we got signal number 9, which man 7 signal says is SIGKILL, which is sent by the Linux out-of-memory killer.
Output interpretation:
VSZ virtual memory remains constant at printf '0x%X\n' 0x40009A4 KiB ~= 64GiB (ps va...
What is the difference between a .xib file and a .storyboard?
...re you can add XIB files as normal, or a new storyboard.
I'm assuming you mean "storyboards" rather than "timeline". Storyboards allow you to map out, visually, all of the views in your applications and how they interrelate. If you are just starting out with storyboards, there's an introduction to ...
Express.js - app.listen vs server.listen
... explain a little bit more on the second piece of code.What exactly do you mean by a convenience method here?
– Aakash Verma
Jul 12 '17 at 11:42
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What is Node.js? [closed]
...some other build in method that doesn't require adding an npm module. This means that there are five versions of everything. Even the modules included in the Node.js "core" have five more variants should you be unhappy with the default implementation. This leads to rapid evolution, but also some le...