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Most efficient way to make the first character of a String lower case?
... are operations per second, the more the better.
Tests
test1 was first Andy's and Hllink's approach:
string = Character.toLowerCase(string.charAt(0)) + string.substring(1);
test2 was second Andy's approach. It is also Introspector.decapitalize() suggested by Daniel, but without two if statemen...
How to get all possible combinations of a list’s elements?
I have a list with 15 numbers in, and I need to write some code that produces all 32,768 combinations of those numbers.
27...
Take screenshots in the iOS simulator
...ke a screenshot of my iOS application when it is running in the simulator, and save the screenshot on my Mac. How can I do this?
...
Check if a string contains an element from a list (of strings)
...
With LINQ, and using C# (I don't know VB much these days):
bool b = listOfStrings.Any(s=>myString.Contains(s));
or (shorter and more efficient, but arguably less clear):
bool b = listOfStrings.Any(myString.Contains);
If you wer...
What does “default” mean after a class' function declaration?
...e that function automatically.
With the introduction of move constructors and move assignment operators, the rules for when automatic versions of constructors, destructors and assignment operators are generated has become quite complex. Using = default and = delete makes things easier as you don't ...
What is the Sign Off feature in Git for?
...
Sign-off is a requirement for getting patches into the Linux kernel and a few other projects, but most projects don't actually use it.
It was introduced in the wake of the SCO lawsuit, (and other accusations of copyright infringement from SCO, most of which they never actually took to court)...
Declare slice or make slice?
In Go, what is the difference between var s []int and s := make([]int, 0) ?
4 Answers
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Python, compute list difference
...vation is important Roman Bodnarchuk may have a better approach. For speed and pure set-like behavior this one seems better.
– Bryan P
Feb 13 '15 at 23:01
8
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How to calculate the difference between two dates using PHP?
...s answer below
You can use strtotime() to convert two dates to unix time and then calculate the number of seconds between them. From this it's rather easy to calculate different time periods.
$date1 = "2007-03-24";
$date2 = "2009-06-26";
$diff = abs(strtotime($date2) - strtotime($date1));
$year...
Access object child properties using a dot notation string [duplicate]
... answered Nov 8 '11 at 14:39
Andy EAndy E
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