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Difference between Dictionary and Hashtable [duplicate]
...with ILookup<>: it also implements an Enumerator, which is different from the Dictionary enumerator. When a Linq operator is used on the multivaluedictionary, it can't chose which enumerator to use as it also can use IEnumerable<TKey, IGrouping<TKey, TValue>>, even though ILookup i...
Factory pattern in C#: How to ensure an object instance can only be created by a factory class?
...d a custom one. also, in this case there is literally nothing to be gained from using a static "constructor" instead of just doing the validation in the real constructor (since it's part of the class anyway). it's even WORSE, since you can now get a null return value, opening up for NREs and "what t...
Putty: Getting Server refused our key Error
... you open authorized_key in vim and immediately try to paste the first 's' from the 'ssh_rsa" is treated as vim command after which vim will switch to the insert mode and the remaining text is being pasted. If you enter the insert mode before pasting (e.g. using i) the leading 's' won't be cut.
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Appending a vector to a vector [duplicate]
... standard specifically says that the iterators given to insert must not be from the same range as the receiver object's elements, so I suppose that technically speaking it's UB.
– templatetypedef
Jan 30 '14 at 21:47
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Does use of final keyword in Java improve the performance?
...le objects, on the other hand, can have arbitrarily complex state spaces.. From my personal experience, using the keyword final should highlight the intent of the developer to lean toward immutability, not to "optimize" code. I encourage you to read this chapter, fascinating !
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Floating point vs integer calculations on modern hardware
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Alas, I can only give you an "it depends" answer...
From my experience, there are many, many variables to performance...especially between integer & floating point math. It varies strongly from processor to processor (even within the same family such as x86) because diffe...
JavaScript private methods
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If you make an object McDonalds() inherit from Restaurant() McDonalds can't override private methods if you declare them in this way. Well, actually you can, but it will not work if some other method calls the private, it will call the original version of the method ...
Quickest way to compare two generic lists for differences
...; to compare the objects. It works by first collecting all distinct values from the second sequence, and then streaming the results of the first, checking that they haven't been seen before.
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what does -webkit-transform: translate3d(0,0,0); exactly do? Apply to body?
...the cached texture would really improve benefit. When the content is moved from cached texture to the framebuffer, the transform would boost performance for complex operation, but do no benefit for normal paint events. It won't do any harm nor have any benefit. Correct me if I am wrong?
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Create a pointer to two-dimensional array
...is provided by the array l_matix itself. The pointers to them take storage from where-ever they are declared in and as (stack, static data segment, ...).
– Johannes Schaub - litb
Jun 27 '09 at 19:32
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