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Why do we need virtual functions in C++?
...here is not such a virtual method in some base class, then you’ll get an error (which is desirable).
The ugliness of doing this without virtual methods
Without virtual one would have to implement some Do It Yourself version of the dynamic binding. It’s this that generally involves unsafe man...
Objective-C: difference between id and void *
...tor in the context, likely casting on the way in and way out.
Fragile and error prone, but the only way.
Blocks solve this -- Blocks are closures for C. They are available in Clang -- http://llvm.org/ and are pervasive in Snow Leopard (http://developer.apple.com/library/ios/documentation/Performa...
Why do we always prefer using parameters in SQL statements?
...schema changes and your query runs but some columns disappear, the compile error points to the line in your code that tries to access the missing data. And there are numerous other advantages. Why would you want to access data any other way?
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How to find where gem files are installed
...y handy as you can use it to grep or edit files:
grep -R 'Internal server error' "$(gem path thin)"
subl "$(gem path thin)"
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How to reverse a string in Go?
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with go 1.1+ it returns error in string([]int) line, if instead []rune type is used for o, all works
– Otuk
Aug 11 '13 at 3:37
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Is there any Rails function to check if a partial exists?
...f exception thrown in the partial. IMHO this makes it harder to track down errors.
– Matt
Aug 26 '11 at 20:25
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How to use transactions with dapper.net?
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Is it necessary to explicitly roll back on error or does System.Transactions handle that automatically?
– Norbert Norbertson
Oct 3 '17 at 12:30
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How to use Global Variables in C#?
...'m not clear. But I got it answered already. Here: stackoverflow.com/a/20010543/274502
– cregox
Nov 15 '13 at 21:05
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Getting a better understanding of callback functions in JavaScript
...nctions, as well as node.js for all async functions (nodejs usually passes error and data to the callback). Looking into their source code would help!
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Where can I learn jQuery? Is it worth it?
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answered Aug 26 '08 at 2:05
rp.rp.
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