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C++ valarray vs. vector

I like vectors a lot. They're nifty and fast. But I know this thing called a valarray exists. Why would I use a valarray instead of a vector? I know valarrays have some syntactic sugar, but other than that, when are they useful? ...
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What is the purpose of the EBP frame pointer register?

...sembly language and have noticed that the x86 code emitted by compilers usually keeps the frame pointer around even in release/optimized mode when it could use the EBP register for something else. ...
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A valid provisioning profile for this executable was not found for debug mode

...ovisioning portal. Solution: 1) In Xcode, Goto --> Build --> clean all targets. 2) In "Groups & Files" -->Target --> expand it --> right click your app and select Clean "your app" 3) Goto->Window-->Organizer 4) In the Devices tab on the left, select your iphone 5) In t...
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Fatal error: unexpectedly found nil while unwrapping an Optional values [duplicate]

...r: String!) -> AnyObject! // Used by the delegate to acquire an already allocated cell, in lieu of allocating a new one. That's determined by the exclamation mark after AnyObject: AnyObject! So, first thing to consider is, what is an "Implicitly Unwrapped Optional"? The Swift Programmin...
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Unknown file type MIME?

... Actually, per RFC's you should not send any type information with unknown data. RFC-2046 defines only known types but RFC-7231 tells you how to handle unknown types. – Sampo Sarrala - codidact.org ...
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How to tell which commit a tag points to in Git?

...nfig if you use it a lot: [alias] tagcommit = rev-list -n 1 And then call it with: $ git tagcommit $TAG share | improve this answer | follow | ...
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Configure apache to listen on port other than 80

...ttpd.conf here fileuploading.net/860467 nothing like WAMP, Xampp, Appserv. All I have done is compiling apache, tomcat and jk connector from source and trying my best to make them work together. – vivek.m Oct 15 '10 at 11:06 ...
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Difference between Fact table and Dimension table?

...this out to see an alternative view on the star schema model Inmon vs. Kimball. Kimbal has a good forum you may also want to check out here: Kimball Forum. Edit: To answer comment about examples for 4NF: Example for a fact table violating 4NF: Sales Fact (ID, BranchID, SalesPersonID, ItemID, Am...
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jQuery: Return data after ajax call success [duplicate]

I have something like this, where it is a simple call to a script that gives me back a value, a string.. 5 Answers ...
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Correct format specifier to print pointer or address?

... standard (ISO/IEC 9899:1999) says in §7.19.6.1 ¶8: p The argument shall be a pointer to void. The value of the pointer is converted to a sequence of printing characters, in an implementation-defined manner. (In C11 — ISO/IEC 9899:2011 — the information is in §7.21.6.1 ¶8.) On som...