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What's the difference between :: (double colon) and -> (arrow) in PHP?

...func_instance() { echo "in ", __METHOD__, "\n"; /* this is one exception where :: is required to access an * instance member. * The super implementation of func_instance is being * accessed here */ parent::func_instance(); A::func_instance()...
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Is there a constraint that restricts my generic method to numeric types?

Can anyone tell me if there is a way with generics to limit a generic type argument T to only: 21 Answers ...
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The entitlements specified…profile. (0xE8008016). Error iOS 4.2

...ile in my project, as I am not distributing it at all, only putting it on one device. I have gone through all the hoops and loops apple puts you through (certificate, device, provisioning) down to the letter, and I cannot figure out what is going wrong. ...
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How to pattern match using regular expression in Scala?

...ld like to be able to find a match between the first letter of a word, and one of the letters in a group such as "ABC". In pseudocode, this might look something like: ...
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Does Python SciPy need BLAS?

...b libfblas.a rm -rf *.o export BLAS=~/src/BLAS-*/libfblas.a Execute only one of the five g77/gfortran/ifort commands. I have commented out all, but the gfortran which I use. The subsequent LAPACK installation requires a Fortran 90 compiler, and since both installs should use the same Fortran compi...
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How to solve error “Missing `secret_key_base` for 'production' environment” (Rails 4.1)

...al user, let's call it "example_user" for this gist, you will need to find one of these other files: $ vi ~/.bash_profile $ vi ~/.bash_login $ vi ~/.profile These files are in order of importance, which means that if you have the first file, then you wouldn't need to edit the others. If you found...
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How to randomize (shuffle) a JavaScript array?

... == 0 the while loop will never be entered. The call to Math.floor can be done faster using ...| 0. Either tempi or tempj can be removed and the value be directly assigned to myArray[i] or j as appropriate. – RobG Jun 8 '11 at 7:21 ...
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REST / SOAP endpoints for a WCF service

... I want to expose it as both a RESTfull service and as a SOAP service. Anyone has done something like this before? 6 Answe...
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Why does struct alignment depend on whether a field type is primitive or user-defined?

... @Soner no it does not fix it. Did you put the Layout on both fields to be offset 8 ? If so then x and y are the same and changing one changes the other. Clearly not what Jon is after. – BartoszAdamczewski ...
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How to add List to a List in asp.net [duplicate]

...rt way to add List to List instead of looping in result and add new result one by one? 4 Answers ...