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How to map a composite key with JPA and Hibernate?
...ey is a composite key and IMO makes sense when the combined pk is either a meaningful entity itself or it reused in your code.
@IdClass is useful to specify that some combination of fields is unique but these do not have a special meaning.
They also affect the way you write queries (making them mo...
How to set caret(cursor) position in contenteditable element (div)?
...a lot. Is there a chance it could be made to work in "text context" - that means position #5 would be the fifth letter on a screen and not the fifth letter in a code ?
– Frodik
Jun 6 '11 at 8:46
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Why would an Enum implement an Interface?
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@AKh it compares the ordinals, meaning the natural ordering is the order the enum constants are in the source file.
– Jorn
Aug 21 '12 at 21:43
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Illegal string offset Warning PHP
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The error Illegal string offset 'whatever' in... generally means: you're trying to use a string as a full array.
That is actually possible since strings are able to be treated as arrays of single characters in php. So you're thinking the $var is an array with a key, but it's just a...
What's the Hi/Lo algorithm?
... and then fetching them back onto the client. Aside from anything else, it means you can easily make parent/child relationships and have the keys all in place before you do any inserts, which makes batching them simpler.
sha...
Laravel Eloquent ORM Transactions
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@ChristosPapoulas did you mean, we can not get the auto increment id in transaction?
– hellojinjie
May 31 '19 at 9:55
add a co...
ImageView - have height match width?
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While this works, it is not ideal. Running on post means the view renders once before the layout changes. Could allow a flash of content at the wrong height, before drawing correctly. Better to solve earlier. The earliest possible moment to solve is during a custom onMeasure,...
How to adjust layout when soft keyboard appears
... LinearLayout layout. And because mainLayout is inside a LinearLayout this means that that part does't get resized (again see picture in question).
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Difference between EXISTS and IN in SQL?
...lue then Query 1 will find them, but Query 2 cant find null parameters.
I mean IN can't compare anything with null, so it has no result for null, but EXISTS can compare everything with null.
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How to override toString() properly in Java?
... the ToStringTemplate and comparing.
making ToStringTemplate static-final means "ONE VERSION" of the truth, rather than having a "copy" of the template in the unit-test.
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