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Why can't I forward-declare a class in a namespace using double colons?

... All other answers were confusing to me but this "you can't declare a class within a namespace from outside that namespace. You have to be in the namespace." was very helpful hint to remember. – dashesy ...
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How do you test running time of VBA code?

...Counter. Google it for more info. Try pushing the following into a class, call it CTimer say, then you can make an instance somewhere global and just call .StartCounter and .TimeElapsed Option Explicit Private Type LARGE_INTEGER lowpart As Long highpart As Long End Type Private Declare Fu...
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How to remove a TFS Workspace Mapping?

...stating "Show Remote Workspaces" - just tick that and you'll get a list of all your enlistments: From the command line Call "tf workspace" from a developer command prompt. It will bring up the "Manage Workspaces" directly! ...
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How to profile methods in Scala?

What is a standard way of profiling Scala method calls? 12 Answers 12 ...
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Is recursion ever faster than looping?

...med. The more you "IO", the more you have to process. Un-IOing data (aka indexing) is always the biggest performance boost to any system because you don't have to process it in the first place. – Jeff Fischer Dec 28 '18 at 19:52 ...
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How to load assemblies in PowerShell?

... While it is technically correct that LoadWithPartialNamehas been deprecated, the reasons (as outlined in blogs.msdn.com/b/suzcook/archive/2003/05/30/57159.aspx) clearly don't apply for an interactive Powershell session. I suggest you add a note...
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What happens when a computer program runs?

...e: General registers EAX EBX ECX EDX Segment registers CS DS ES FS GS SS Index and pointers ESI EDI EBP EIP ESP Indicator EFLAGS There are also some floating-point and SIMD registers, but for the purposes of this discussion we'll classify those as part of the coprocessor and not the CPU. The me...
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Is there a limit to the length of a GET request? [duplicate]

...ns on request-target length are found in practice. It is RECOMMENDED that all HTTP senders and recipients support request-target lengths of 8000 or more octets." tools.ietf.org/html/… – Mark Nottingham Nov 16 '11 at 2:04 ...
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Is there a way of making strings file-path safe in c#?

...ered Dec 2 '08 at 7:35 Jonathan AllenJonathan Allen 61.5k6363 gold badges228228 silver badges416416 bronze badges ...
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Extract subset of key-value pairs from Python dictionary object?

... If you're using Python 3, and you only want keys in the new dict that actually exist in the original one, you can use the fact to view objects implement some set operations: {k: bigdict[k] for k in bigdict.keys() & {'l', 'm', 'n'}} ...