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select * vs select column
... providing those columns in select query, is there any performance degradation regarding more/less I/O or memory?
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Do I set properties to nil in dealloc when using ARC?
I am trying to learn Automatic Reference Counting in iOS 5. Now the first part of this question should be easy:
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Can I arrange repositories into folders on Github?
...t projects like webdesign, wordpress themes and different types of applications. And some of these also belong to bigger projects because they were about testing some stuff as a different application.
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Is it expensive to use try-catch blocks even if an exception is never thrown?
We know that it is expensive to catch exceptions. But, is it also expensive to use a try-catch block in Java even if an exception is never thrown?
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Grasping the Node JS alternative to multithreading
...ode.js server has an internal thread pool so it can perform blocking operations and notify the main thread with a callback or event when things complete.
So I imagine that it will make limited use of another core for the thread pool, for example if you do a non-blocking file system read this is li...
How to create REST URLs without verbs?
...for good URI design:
Don't use query parameters to alter state
Don't use mixed-case paths if you can help it; lowercase is best
Don't use implementation-specific extensions in your URIs (.php, .py, .pl, etc.)
Don't fall into RPC with your URIs
Do limit your URI space as much as possible
Do keep pa...
How to recover stashed uncommitted changes
...ply stash # apply top of stash stack
git stash apply stash@{1} # and mix in next stash stack entry too
You can choose the "apply" order here, picking out particular stashes to apply in a particular sequence. Note, however, that each time you're basically doing a "git merge", and as the merg...
Why Large Object Heap and why do we care?
...ge Object Heap. This optimises:
Object allocation (small objects are not mixed with large objects)
Garbage collection (LOH collected only on full GC)
Memory defragmentation (LOH is never rarely compacted)
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Regular cast vs. static_cast vs. dynamic_cast [duplicate]
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Avoid using C-Style casts.
C-style casts are a mix of const and reinterpret cast, and it's difficult to find-and-replace in your code. A C++ application programmer should avoid C-style cast.
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When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?
...ting outside the allocation,
but to also identify mixing alignment-specific
allocation/deallocation routines with the regular
ones.
0xFD Fence Memory Also known as "no mans land." This is used to wrap
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