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What does the “===” operator do in Ruby? [duplicate]
...lleagues, the convention is that === is the case subsumption operator. Basically, it's a boolean operator which asks the question "If I have a drawer labelled a would it make sense to put b in that drawer?"
An alternative formulation is "If a described a set, would b be a member of that set?"
For ...
How to run Rails console in the test environment and load test_helper.rb?
... other tests. I'd like to go to the console and run different Factory Girl calls to check out what's happening. For example, I'd like to go in there are do...
...
R: += (plus equals) and ++ (plus plus) equivalent from c++/c#/java, etc.?
...on(x)
{
eval.parent(substitute(x <- x + 1))
}
In that case you would call
x <- 10
inc(x)
However, it introduces function call overhead, so it's slower than typing x <- x + 1 yourself. If I'm not mistaken increment operator was introduced to make job for compiler easier, as it could co...
How to get number of rows using SqlDataReader in C#
...isolation level of Snapshot or Serializable.
– Lukazoid
Feb 20 '14 at 13:35
...
Nested function in C
...her function body, though.
E.g.
void f(void)
{
// Declare a function called g
void g(void);
// Call g
g();
}
// Definition of g
void g(void)
{
}
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How to have favicon / icon set when bookmarklet dragged to toolbar?
...ch a favicon may be loaded.
So, currently there is no way for you to provide a favicon for a bookmarklet. Think about it like this: remember the whole Javascript sandbox thing - where Javascript may not access anything outside the domain of the web page where it is running? Well a bookmarklet that...
How to set background color of a View
...
When you call setBackgoundColor it overwrites/removes any existing background resource, including any borders, corners, padding, etc.
What you want to do is change the color of the existing background resource...
View v;
v.getBackgro...
What is the most useful script you've written for everyday life? [closed]
...be so popular :p
As for how - Microsoft exposes a nice little API feature called Hooks.
Using that hook; I was able to write a "filter" that did what I needed it to do (hint: if you return 1 with your callback windows will not process the keystroke).
The reason I know about this actually is not b...
Method can be made static, but should it?
...
"After [marking members as static], the compiler will emit non-virtual call sites to these members which will prevent a check at
runtime for each call that ensures the current object pointer is
non-null. This can result in a measurable performance gain for
performance-sensitive code. In so...
Change navbar color in Twitter Bootstrap
...ault .navbar-toggle .icon-bar {
background-color: #CCC;
}
@media (max-width: 767px) {
.navbar-default .navbar-nav .open .dropdown-menu > li > a {
color: #777;
}
.navbar-default .navbar-nav .open .dropdown-menu > li > a:hover,
.navbar-default .navbar-nav .open ...