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What are forward declarations in C++?

... file the linker is joining with the one that uses add to produce a dll or exe. It's possible that the linker may get the wrong add. Say you wanted to use int add(int a, float b), but accidentally forgot to write it, but the linker found an already existing int add(int a, int b) and thought that was...
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How can I convert a long to int in Java?

...d for primitive types. (int) l doesn't try to treat a 64-bit integer as a 32-bit integer, it actually returns a different 32-bit integer with the same 32 lower order bits. With objects, you cast to a more specific child class, but with primitve types, a cast is not really a cast, but a conversion....
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C# 'is' operator performance

...read too much into the minor differences. It was interesting to see that x64 created faster but executed as/is slower than x86 x64 Release Mode: Stopwatch: As: 561ms Is: 597ms Base property: 539ms Base field: 555ms Base RO field: 552ms Virtual GetEnumType() test: 556ms Virtual IsB() test: ...
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What is the difference between a weak reference and an unowned reference?

...ar Person? ? – Dean Nov 30 '14 at 4:32 4 @JustinLevi, If you declare both properties as weak, the...
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How to pass parameters to the DbContext.Database.ExecuteSqlCommand method?

... jessegavinjessegavin 64.2k2626 gold badges135135 silver badges162162 bronze badges ...
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How to diff one file to an arbitrary version in Git?

...u can refer to commit hash number, for example if the hash number is x110bd64, you can do something like this to see the difference: git diff x110bd64 pom.xml share | improve this answer ...
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Replace tabs with spaces in vim

... -t2" – Paul Tomblin Jan 9 '09 at 3:32 375 or you can just use :retab – ram...
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How to get the unix timestamp in C#

...ng DateTime.UtcNow and subtracting the epoch time of 1970-01-01. e.g. Int32 unixTimestamp = (Int32)(DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1))).TotalSeconds; DateTime.UtcNow can be replaced with any DateTime object that you would like to get the unix timestamp for. There is also a field...
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The type initializer for 'MyClass' threw an exception

...he right issue. For me, it tried to tell me The input is not a valid Base-64 string as it contains a non-base 64 character for what a function was returning to a DataTable object, but for me, there was actually an underlying issue where I was calling an app.config parameter by the wrong name, so a ...
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Maximum length of the textual representation of an IPv6 address?

...n the raw colon separated format, i.e. [0000:0000:0000:0000:0000:ffff:c0a8:64e4] for the address above. share | improve this answer | follow | ...