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How to design a database for User Defined Fields?
... less code needed than for the
original options 1, 3, & 4.
Other Considerations:
If there is anything about the
nature of the data that would make
sense for the UDFs to be grouped,
that should be encouraged. That way,
those data elements can be combined
into a single table. For example,
let'...
CSS triangle custom border color
...the triangle have a white background with a 1px border (around the angled sides of the triangle) with color #CAD5E0. Is this possible? Here's what I have so far:
...
Javascript when to use prototypes
...ve that by returning an object:
return {
show: function() { ... },
hide: function() { ... },
css: function() { ... },
animate: function() { ... },
// etc...
};
But that would mean that every jQuery object in memory would have dozens of named slots containing the same methods, over ...
Does Java casting introduce overhead? Why?
...are 2 types of casting:
Implicit casting, when you cast from a type to a wider type, which is done automatically and there is no overhead:
String s = "Cast";
Object o = s; // implicit casting
Explicit casting, when you go from a wider type to a more narrow one. For this case, you must explicitly...
How to skip “Loose Object” popup when running 'git gui'
... from anyway? The output of git-fsck, perhaps?
– David Dombrowsky
Oct 7 '09 at 14:57
thanks - i also had loose object...
What's the difference between --general-numeric-sort and --numeric-sort options in gnu sort
sort provides two kinds of numeric sort. This is from the man page:
3 Answers
3
...
Entity Framework and Connection Pooling
...al context. ObjectContext internally implements several patterns including Identity Map and Unit of Work. Impact of using global context is different per application type.
For web applications use single context per request. For web services use single context per call. In WinForms or WPF applicati...
What do hjust and vjust do when making a plot using ggplot?
...his range, but don't expect it to behave in any specific way. This is outside spec.)
hjust controls horizontal justification and vjust controls vertical justification.
An example should make this clear:
td <- expand.grid(
hjust=c(0, 0.5, 1),
vjust=c(0, 0.5, 1),
angle=c(0, 45, 90),...
Using emit vs calling a signal as if it's a regular function in Qt
...example a foo signal with no parameters generates this member function:
void W::foo()
{
QMetaObject::activate(this, &staticMetaObject, 0, 0);
}
And the code emit foo(); is pre-processed to simply foo();
emit is defined in Qt/qobjectdefs.h (in the open-source flavor of the source anyway),...
移动前端开发之viewport的深入理解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...这个layout viewport的宽度可以通过 document.documentElement.clientWidth 来获取。
然而，layout viewport 的宽度是大于浏览器可视区域的宽度的，所以我们还需要一个viewport来代表 浏览器可视区域的大小，ppk把这个viewport叫做 visual viewport。...