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Why does GCC generate such radically different assembly for nearly the same C code?
...unc_one().
Believe it or not, fast_trunc_one() is being optimized to this:
int fast_trunc_one(int i) {
int mantissa, exponent;
mantissa = (i & 0x07fffff) | 0x800000;
exponent = 150 - ((i >> 23) & 0xff);
if (exponent < 0) {
return (mantissa << -exponen...
Missing Maven dependencies in Eclipse project
... FYI, I first had to right click on my project, go to Configure and "Convert to Maven project."
– duma
Jul 24 '14 at 16:10
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How do you get the width and height of a multi-dimensional array?
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Use GetLength(), rather than Length.
int rowsOrHeight = ary.GetLength(0);
int colsOrWidth = ary.GetLength(1);
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How can I make an entire HTML form “readonly”?
...ion depending on how complicated your form is. You should read this post:
Convert HTML forms to read-only (Update: broken post link, archived link)
EDIT: Based on your update, why are you so worried about having it read-only? You can do it via client-side but if not you will have to add the requi...
How do I expand the output display to see more columns of a pandas DataFrame?
Is there a way to widen the display of output in either interactive or script-execution mode?
19 Answers
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Why does JPA have a @Transient annotation?
...he transient keyword, that field will not be serialized when the object is converted to a byte stream. Furthermore, since JPA treats fields marked with the transient keyword as having the @Transient annotation, the field will not be persisted by JPA either.
On the other hand, fields annotated @Tra...
How can I remove duplicate rows?
...you have a GUID instead of an integer, you can replace
MIN(RowId)
with
CONVERT(uniqueidentifier, MIN(CONVERT(char(36), MyGuidColumn)))
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Do I need all three constructors for an Android custom view?
...(context, attrs, 0);
}
public MyView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init(context, attrs, defStyle);
}
private void init(Context context, AttributeSet attrs, int defStyle) {
// do additional work
}
The reason is that the parent cl...
Which is faster: Stack allocation or Heap allocation
...ack allocation is much faster since all it really does is move the stack pointer.
Using memory pools, you can get comparable performance out of heap allocation, but that comes with a slight added complexity and its own headaches.
Also, stack vs. heap is not only a performance consideration; it al...
How do I get an empty array of any size in python?
... you modify one item, all will be changed. ...But, for this example using integers (or any other immutable type), it makes no difference. Or, if you just assign to elements, it is not a problem either. (I mention it because I've done exactly that far too often :) )
– dappawi...