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@Basic(optional = false) vs @Column(nullable = false) in JPA
...). (e.g. entityManager.persist calls).
So I went to the specification and read up about it.
Here is what the spec has to say:
http://download.oracle.com/otndocs/jcp/persistence-2.0-fr-oth-JSpec/
Basic(optional): Whether the value of the field or property may be
null. This is a hint and is dis...
How to get JavaScript caller function line number? How to get JavaScript caller source URL?
...e name, and line number etc.. ; in chrome you get something similar if you read the 'stack' property of the Error instance).
Long story short , you can do something like this:
function errorHandler(error, errorInstance){
this.errorMessage = error;
this. errorInstance = errorInstance;
}
err...
What is the difference between .map, .every, and .forEach?
... iterates the Array performing a given action for each item in the Array.
Read about these and the many other Array iteration methods at MDN.
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What does the ??!??! operator do in C?
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A perfectly readable alternative would be ErrorHasOccurred() && HandleError(); That is, if you're used to shell scripting. :)
– Yam Marcovic
Oct 24 '11 at 15:01
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Difference between $(document.body) and $('body')
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I read about this somewhere and I wanted to use it right away XD
– Phiter
Mar 31 '18 at 18:48
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Displaying the Indian currency symbol on a website
... (₹). Use it like you would © for the copyright sign. For more, read Wikipedia's article on the rupee sign.
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What are the uses for Cross Join?
...d nothing to do with the table, (perhaps he forgot his watch and wanted to read the time via SELECT SYSDATE FROM...) He realized that he still had his DUAL table lying around, and used that. After a while, he tired of seeing the time printed twice, so he eventual deleted one of the rows.
Others at...
WebDriver: check if an element exists? [duplicate]
...t, and then leate reset it. But unfortunaly you can set the value, but not read it -- cool api
– Ralph
Jan 9 '12 at 15:02
4
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Switch branch names in git
...e any branch references in .git/config. I changed [branch "crap_work"] to read [branch "master"] so that master would still sync up with origin/master. Of course, the state of the two repos was such that this still made sense.
– Eponymous
Sep 17 '12 at 3:56
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When should we implement Serializable interface?
...atanNir A Strictly defined schema is better. And JSON is meant to be human readable, while binary encoded formats are far more efficient over the wire
– OneCricketeer
Apr 23 '18 at 7:10
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