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Why is there an injected class name?
...nt instantiation. See DR 176 for a change between C++98 and C++03 that clarified that.
The idea of the injected class name was present in C++98, but the terminology was new for C++03.
C++98 says:
A class-name is inserted into the scope in which it is declared immediately after the class-name i...
jQuery Scroll To bottom of the page
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This is not perfect, as in some cases, even if rare, there might be pages longer than that, specially pages that load unlimited content dynamically. This will stop the scroll mid way.
– Akhil Gupta
Mar 18 '19 at 15:24
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Plain Old CLR Object vs Data Transfer Object
...planation of a DTO for an example of the use of this pattern.
Here's the difference: POCO describes an approach to programming (good old fashioned object oriented programming), where DTO is a pattern that is used to "transfer data" using objects.
While you can treat POCOs like DTOs, you run the ri...
Usage of protocols as array types and function parameters in swift
...otocol. The objects should be stored in a typed array. According to the Swift documentation protocols can be used as types:
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Can I find out the return value before returning while debugging in Visual Studio?
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Not that I know of. Note that if you do add a variable, it will get removed by the compiler in release builds anyway...
Update:
This functionality has been added to VS2013.
You can see the return values in the autos windows or use $ReturnValue in the wat...
RegEx for Javascript to allow only alphanumeric
... a reg ex that only allows alphanumeric. So far, everyone I try only works if the string is alphanumeric, meaning contains both a letter and a number. I just want one what would allow either and not require both.
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How can I do a case insensitive string comparison?
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@Fred I agree but can you qualify the reason?
– Gusdor
May 21 '16 at 16:08
22
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How to test an SQL Update statement before running it?
...ffected by running a select using the same WHERE clause as the UPDATE.
So if you UPDATE is
UPDATE foo
SET bar = 42
WHERE col1 = 1
AND col2 = 'foobar';
The following will show you which rows will be updated:
SELECT *
FROM foo
WHERE col1 = 1
AND col2 = 'foobar';
...
Persistent invalid graphics state error when using ggplot2
...) first, takes less time than reinstall package. This can be a second step if dev.off() didn't work.
– Jason Goal
Oct 29 '18 at 14:52
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Allowed characters in Linux environment variable names
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@checksum, UPPERCASE is explicitly specified for variable names with meaning to POSIX-specified tools, including the shell; names with at least one lower-case character are explicitly reserved for application use. Thus, best practice is actually to include at leas...