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Why does parseInt yield NaN with Array#map?
...10, in this case). Base 1 is an impossible number base, and 3 is not a valid number in base 2:
parseInt('1', 0); // OK - gives 1
parseInt('2', 1); // FAIL - 1 isn't a legal radix
parseInt('3', 2); // FAIL - 3 isn't legal in base 2
So in this case, you need the wrapper function:
['1','2','3'].m...
Increasing the timeout value in a WCF service
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Are you referring to the server side or the client side?
For a client, you would want to adjust the sendTimeout attribute of a binding element. For a service, you would want to adjust the receiveTimeout attribute of a binding elemnent.
<system.serviceMo...
shell init issue when click tab, what's wrong with getcwd?
...inal you remove that directory (from within a script or whatever). To get rid of this, in case your current directory was recreated in the meantime, just cd to another (existing) directory and then cd back; the simplest would be: cd; cd -.
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Why is DarkGray lighter than Gray?
...han plain "Gray", because "Dark Gray"
was descended from X11 – for it did not exist in HTML nor CSS level
1 – while "Gray" was descended from HTML. Even in the current draft
for CSS 4.0, dark gray continues to be a lighter shade than gray.
W3C color keywords:
DimGray '#696969' (105,...
img tag displays wrong orientation
...e the picture then wouldn't you just shift around the pixels and swap the width for the height?
– Jack Giffin
Oct 29 '17 at 1:02
15
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Disable copy constructor
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You can make the copy constructor private and provide no implementation:
private:
SymbolIndexer(const SymbolIndexer&);
Or in C++11, explicitly forbid it:
SymbolIndexer(const SymbolIndexer&) = delete;
...
Await on a completed task same as task.Result?
... is different; await does not wrap the exception in an AggregateException. Ideally, asynchronous code should never have to deal with AggregateException at all, unless it specifically wants to.
The second reason is a little more subtle. As I describe on my blog (and in the book), Result/Wait can cau...
Simulate airplane mode in iPhone Simulator
...em layer, to restrict an app from talking to the network. Unix doesn't provide that; it would almost certainly need kernel support to get it. You could do it more easily for NSURLConnection and its kin, but it could be more confusing if some calls work and some don't.
– Rob Nap...
Are PostgreSQL column names case-sensitive?
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All identifiers (including column names) that are not double-quoted are folded to lower case in PostgreSQL. Column names that were created with double-quotes and thereby retained upper-case letters (and/or other syntax violations...
What is the proper way to check if a string is empty in Perl?
...hink that length is the closest test that we have to the expression of the idea that there is nothing in the string.
– brian d foy
Jan 12 '10 at 11:23
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