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What is meant by 'first class object'?
...ikipedia:
In computer science, a programming
language is said to support
first-class functions (or function
literal) if it treats functions as
first-class objects. Specifically,
this means that the language supports
constructing new functions during the
execution of a program, stor...
g++ undefined reference to typeinfo
I just ran across the following error (and found the solution online, but it's not present in Stack Overflow):
17 Answers
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DateTime.Now vs. DateTime.UtcNow
... been wondering what exactly are the principles of how the two properties work. I know the second one is universal and basically doesn't deal with time zones, but can someone explain in detail how they work and which one should be used in what scenario?
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Difference between TCP and UDP?
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TCP is a connection oriented stream over an IP network. It guarantees that all sent packets will reach the destination in the correct order. This imply the use of acknowledgement packets sent back to the sender, and automatic retransmission, cau...
Ruby optional parameters
... gotcha with this method: e.g. If you're trying to make the default value for scope true and you pass in false, scope ||= true won't work. It evaluates the same as nil and will set it to true
– Joshua Pinter
Nov 10 '11 at 5:32
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any tool for java object to object mapping? [closed]
I am trying to convert DO to DTO using java and looking for automated tool before start writing my own. I just wanted to know if there any free tool available for the same.
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Remove URL parameters without refreshing page
...t URL and add / inject it (the new modified URL) as a new URL entry to history list, use pushState:
window.history.pushState({}, document.title, "/" + "my-new-url.html");
2- To replace current URL without adding it to history entries, use replaceState:
window.history.replaceState({}, document.ti...
Validate phone number with JavaScript
I found this code in some website, and it works perfectly. It validates that the phone number is in one of these formats:
(123) 456-7890 or 123-456-7890
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How do you convert epoch time in C#?
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To get this to work correctly I had to change .AddSeconds to .AddMilliseconds. You will need to know whether your number is coming from Seconds or Milliseconds in order to get the correct result. So for instance the following date: 140631...
Getting file size in Python? [duplicate]
Is there a built-in function for getting the size of a file object in bytes? I see some people do something like this:
5 An...