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@UniqueConstraint and @Column(unique = true) in hibernate annotation
...= true) is a shortcut to UniqueConstraint when it is only a single field.
From the example you gave, there is a huge difference between both.
@Column(unique = true)
@ManyToOne(optional = false, fetch = FetchType.EAGER)
private ProductSerialMask mask;
@Column(unique = true)
@ManyToOne(optional = f...
What makes JNI calls slow?
... making its own calls to the JVM. Accessing Java fields, methods and types from the native code requires something similar to reflection. Signatures are specified in strings and queried from the JVM. This is both slow and error-prone.
Java Strings are objects, have length and are encoded. Accessing ...
Jasmine.js comparing arrays
...ect(mockArr ).toEqual([1, 2, 3]);
});
But if the array that is returned from some function has more than 1 elements and all are zero then verify by using
expect(mockArray[0]).toBe(0);
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C/C++ NaN constant (literal)?
...e is NaN, you can't compare it with another NaN value. Instead use isnan() from <math.h> in C, or std::isnan() from <cmath> in C++.
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SVG Positioning
...t;rect x="0" y="0" width="60" height="10"/>
</g>
Links: Example from the SVG 1.1 spec
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break out of if and foreach
...
so then the break is breaking from the foreach and not the if. i think my confusion was from this statement if ($abort_if_block) break; i had originally set break 2 and it failed. thanks
– au_stan
Feb 9 '12 at 17:25
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Android: how to make an activity return results to the activity which calls it?
I have a Location activity that can be called from many activities, such as Sign up and Order . In the Location activity the user enters his location, so the activity Location will return this new location to that activity which called it.
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How to change line width in ggplot?
...ped within a ggplot call.
An aesthetic defined within aes(...) is mapped from the data, and a legend created.
An aesthetic may also be set to a single value, by defining it outside aes().
As far as I can tell, what you want is to set size to a single value, not map within the call to aes()
When...
How to document a string type in jsdoc with limited possible values
...ft'|'right')} like user b12toaster mentioned.
But, by taking reference from APIDocjs, here's what I use for writing constrained values, aka allowedValues.
/**
* Set the arrow position of the tooltip
* @param {String='up','down','left','right'} position pointer position
*/
setPosition(positio...
Accessing dict_keys element by index in Python3
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@BrandonBradley: thanks for the link. Only the solution from one of the comments for that blog works for me in Python3: sorted(dict.keys()). In Python2, dict.keys() will return a list of key values.
– Good Will
May 8 '18 at 22:20
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