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Learning Regular Expressions [closed]
... to what you might think of as cautious, add an extra ? to the quantifier. Now you understand how \((.+?)\), the example from your question works. It matches the sequence of a literal left-parenthesis, followed by one or more characters, and terminated by a right-parenthesis.
If your input is '(123...
Infinity symbol with HTML
...
Now this is the first page that comes up when you google the question.
– whitebeard
Jul 23 '15 at 11:25
...
Is multiplication and division using shift operators in C actually faster?
...wer: Not likely.
Long answer:
Your compiler has an optimizer in it that knows how to multiply as quickly as your target processor architecture is capable. Your best bet is to tell the compiler your intent clearly (i.e. i*2 rather than i << 1) and let it decide what the fastest assembly/mach...
What are the security risks of setting Access-Control-Allow-Origin?
...w-Origin to * in order to be able to make cross-subdomain ajax calls.
Now I can't help but feel that I'm putting my environment to security risks.
Please help me if I'm doing it wrong.
...
How do cache lines work?
...eval process can take ~90 nanoseconds, or ~250 clock cycles (from the CPU knowing the address to the CPU receiving data).
By contrast, a hit in L1 cache has a load-use latency of 3 or 4 cycles, and a store-reload has a store-forwarding latency of 4 or 5 cycles on modern x86 CPUs. Things are simila...
How to find out client ID of component for ajax update/render? Cannot find component with expression
...GeneratedIdViewHandler may be helpful in this during development.
If you know to find the javadoc of the UIComponent in question, then you can also just check in there whether it implements the NamingContainer interface or not. For example, the HtmlForm (the UIComponent behind <h:form> tag) s...
Cleanest and most Pythonic way to get tomorrow's date?
...e that is exactly 24 hours ahead (the accepted answer returns midnight (unknown hours from now)). I don't see how leap seconds can change the result here unless called during a leap second on systems where 23:59:60 and 00:00:00 have the same timestamp.
– jfs
Se...
How to check if one DateTime is greater than the other in C#
... new DateTime(2015,1,1);
DateTime end = new DateTime(2015,12,31);
DateTime now = new DateTime(2015,8,20);
if(now.IsBetween(start, end))
{
//Your code here
}
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...
Convert RGB to RGBA over white
... input values and r', g', b', and a' be the output values, all scaled (for now, as it makes the math prettier) between 1 and 0. Then, by the formula for overlaying colors:
r = a' * r' + 1 - a'
g = a' * g' + 1 - a'
b = a' * b' + 1 - a'
The 1 - a' terms represent the background contribution, and th...
What is Node.js' Connect, Express and “middleware”?
Despite knowing JavaScript quite well, I'm confused what exactly these three projects in Node.js ecosystem do. Is it something like Rails' Rack? Can someone please explain?
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