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Cost of len() function
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360
It's O(1) (constant time, not depending of actual length of the element - very fast) on every ...
Package objects
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Guillaume Massé
6,70866 gold badges3737 silver badges5454 bronze badges
answered Aug 3 '10 at 21:48
MoritzMoritz
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Email address validation using ASP.NET MVC data type attributes
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333
If you are using .NET Framework 4.5, the solution is to use EmailAddressAttribute which reside...
What does the “===” operator do in Ruby? [duplicate]
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3 Answers
3
Active
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How do I run a Ruby file in a Rails environment?
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136
The simplest way is with rails runner because you don't need to modify your script.
http://gui...
How can I connect to a Tor hidden service using cURL in PHP?
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You need to set option CURLOPT_PROXYTYPE to CURLPROXY_SOCKS5_HOSTNAME, which sadly wasn't defined in old PHP versions, circa pre-5.6; if you have earlier in but you can explicitly use its value, which is equal to 7:
curl_setopt($ch, CURLOPT_PROXYTYPE, 7...
What is a NullReferenceException, and how do I fix it?
...e common scenarios where the exception can be thrown:
Generic
ref1.ref2.ref3.member
If ref1 or ref2 or ref3 is null, then you'll get a NullReferenceException. If you want to solve the problem, then find out which one is null by rewriting the expression to its simpler equivalent:
var r1 = ref1;
var ...
Why can't I assign a *Struct to an *Interface?
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edited May 23 '17 at 10:31
Community♦
111 silver badge
answered Nov 22 '12 at 11:31
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How do you dynamically add elements to a ListView on Android?
...d using:
adapter.notifyDataSetChanged();
An Adapter is instantiated with 3 parameters: the context, which could be your activity/listactivity; the layout of your individual list item; and lastly, the list, which is the actual data to be displayed in the list.
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How to get the current time in milliseconds from C in Linux?
... s++;
ms = 0;
}
printf("Current time: %"PRIdMAX".%03ld seconds since the Epoch\n",
(intmax_t)s, ms);
}
If your goal is to measure elapsed time, and your system supports the "monotonic clock" option, then you should consider using CLOCK_MONOTONIC instead of CLOCK_...