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NULL vs nil in Objective-C
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nil should only be used in place of an id, what we Java and C++ programmers would think of as a pointer to an object. Use NULL for non-object pointers.
Look at the declaration of that method:
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object...
Prevent Bootstrap Modal from disappearing when clicking outside or pressing escape? [duplicate]
...ndow, and would like to prevent the user from closing it when clicking outside of the modal or when pressing escape. Instead, I want it to be closed when the user presses the finish button. How could I achieve this scenario?
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Spring MVC @PathVariable getting truncated
I have a controller that provides RESTful access to information:
16 Answers
16
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Another Repeated column in mapping for entity error
...twice. And indeed, you have:
@Column(nullable=false)
private Long customerId;
and also:
@ManyToOne(optional=false)
@JoinColumn(name="customerId",referencedColumnName="id_customer")
private Customer customer;
(and the same goes for productId/product).
You shouldn't reference other entities by ...
Test if element is present using Selenium WebDriver?
...ElementFound exception, which is a shame as I was hoping to use this to avoid catching that exception in a given instance.
– user3864935
Aug 4 '15 at 8:54
1
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Android: why is there no maxHeight for a View?
...olling. I just simply overrode the onMeasure method in ScrollView.
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
heightMeasureSpec = MeasureSpec.makeMeasureSpec(300, MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
This mig...
How can I write text on a HTML5 canvas element?
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var canvas = document.getElementById("my-canvas");
var context = canvas.getContext("2d");
context.fillStyle = "blue";
context.font = "bold 16px Arial";
context.fillText("Zibri", (canvas.width / 2) - 17, (canvas.height / 2) + 8);
#my-canvas {
backgro...
Load local JSON file into variable
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If you pasted your object into content.json directly, it is invalid JSON. JSON keys and values must be wrapped in double quotes (" not ') unless the value is numeric, boolean, null, or composite (array or object). JSON cannot contain functions or undefined values. Below is your object as v...
@UniqueConstraint and @Column(unique = true) in hibernate annotation
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As said before, @Column(unique = 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, fet...
How can I display just a portion of an image in HTML/CSS?
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Just to clarify, you’d set the width and height of the container td, div, span or whatever to 50px to make this work.
– Paul D. Waite
Apr 27 '09 at 8:38
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