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How can I convert String[] to ArrayList [duplicate]
I need to convert a String[] to an ArrayList<String> and I don't know how
6 Answers
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Difference between std::system_clock and std::steady_clock?
...throw std::logic_error("QueryPerformanceCounter not supported: " + std::to_string(GetLastError()));
}
};
For Linux it is even easier. Just read the man page of clock_gettime and modify the code above.
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Efficient way to remove keys with empty strings from a dict
...dict and would like to remove all the keys for which there are empty value strings.
17 Answers
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What underlies this JavaScript idiom: var self = this?
...s article on alistapart.com. (Ed: The article has been updated since originally linked)
self is being used to maintain a reference to the original this even as the context is changing. It's a technique often used in event handlers (especially in closures).
Edit: Note that using self is now discour...
Loading/Downloading image from URL on Swift
...e view, typically from a nib.
print("Begin of code")
let url = URL(string: "https://cdn.arstechnica.net/wp-content/uploads/2018/06/macOS-Mojave-Dynamic-Wallpaper-transition.jpg")!
downloadImage(from: url)
print("End of code. The image will continue downloading in the background and ...
Is there any overhead to declaring a variable within a loop? (C++)
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Stack space for local variables is usually allocated in function scope. So no stack pointer adjustment happens inside the loop, just assigning 4 to var. Therefore these two snippets have the same overhead.
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How to fix the datetime2 out-of-range conversion error using DbContext and SetInitializer?
...teTime.Now;
LastLogin = DateTime.Now;
}
public String FirstName { get; set; }
public String MiddleName { get; set; }
public String LastName { get; set; }
public String EmailId { get; set; }
public String ContactNo { get; set; }
publ...
How to check if a string contains text from an array of substrings in JavaScript?
Pretty straight forward. In javascript, I need to check if a string contains any substrings held in an array.
21 Answers
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SQL select join: is it possible to prefix all columns as 'prefix.*'?
...e is to assign a dummy column to separate each new table. This works especially well if you're looping through a result set for a list of columns in a scripting language such as Python or PHP.
SELECT '' as table1_dummy, table1.*, '' as table2_dummy, table2.*, '' as table3_dummy, table3.* FROM table...
Why does the Scala compiler disallow overloaded methods with default arguments?
...verloaded versions) into the naming schema, e.g. in this case:
def foo(a: String)(b: Int = 42) = a + b
def foo(a: Int) (b: Int = 42) = a + b
it would be something like:
def foo$String$default$2 = 42
def foo$Int$default$2 = 42
Someone willing to write a SIP proposal?
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