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How do I remove code duplication between similar const and non-const member functions?
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@VioletGiraffe we know that the object wasn't originally created const, as it is a non-const member of a non const object, which we know because we are in a non-const method of said object. The compiler doesn't make this inference, it follows a...
When is an interface with a default method initialized?
...ialized by non constant value (method call), is not used anywhere.
It is known at compile time that constant field of interface is not used anywhere, and the interface is not containing any default method (In java-8) so there is no need to initialize or load the interface.
Interface will be initia...
How to highlight cell if value duplicate in same column for google spreadsheet?
... apply to cell A1, but will to A4 and A8 if they are the same (duplicate). Now, both A4 and A8 will be formatted.
– BBking
Mar 3 '16 at 0:50
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How to identify numpy types in python?
...umpyish, add an or to test for that. And so on. The point is, you have to know what you're actually asking for when you want to do something as unusual as loose manual type switching, but once you know, it's easy to implement.
– abarnert
Mar 11 '16 at 20:41
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Do unix timestamps change across timezones?
... In my other life I am a flight instructor. We use UTC (also known as "Zulu time") for takeoff and landing times, so that the difference between the times is an accurate measurement of the length of the flight, without having to consider what time zone the starting and ending airports a...
Find the nth occurrence of substring in a string
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+1 for the one-liner, this should help me right now. I had been thinking of doing the equivalent of .rfind('XXX'), but that would fall apart if 'XXX' appears later in the input anyway.
– Nikhil Chelliah
Jul 7 '10 at 4:17
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Creating a singleton in Python
... http://googletesting.blogspot.com/2008/08/root-cause-of-singletons.html:
Now, there is one kind of Singleton which is OK. That is a singleton where all of the reachable objects are immutable. If all objects are immutable than Singleton has no global state, as everything is constant. But it is so e...
When - and why - should you store data in the Windows Registry?
... used the registry.
From windows Vista, we use ini files although they are now xml based.
The registry is machine dependent. I have never liked it because its getting to slow and it is almost imposible to find the thing you need. That's why I like simple ini or other setting files. You know where ...
Is null reference possible?
... return *pointer;
}
When the compiler sees this function, it does not know whether the pointer is a null pointer or not. So it just generates code that turns any pointer into the corresponding reference. (Btw: This is a noop since pointers and references are the exact same beast in assembler.) N...
Regular expressions in C: examples?
...g PCRE2. This means you can literally use all the regex examples out there now and not have to translate from some ancient regex.
I made an answer for this already, but I think it can help here too..
Regex In C To Search For Credit Card Numbers
// YOU MUST SPECIFY THE UNIT WIDTH BEFORE THE INCLU...