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Explain the use of a bit vector for determining if all characters are unique
...am>y m> be a little bit faster, because operations with bits are verm>y m> low level m>and m> can be executed as-is bm>y m> CPU. BitVector allows writing a little bit less crm>y m>ptic code instead plus it can store more flags.
For future reference: bit vector is also known as bitSet or bitArram>y m>. Here are some links to thi...
C# LINQ find duplicates in List
... , how can I retrieve a list that contains entries repeated more than once m>and m> their values?
9 Answers
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Pm>y m>thon - Create a list with initial capacitm>y m>
...i]= message
return result
Results. (evaluate each function 144 times m>and m> average the duration)
simple append 0.0102
pre-allocate 0.0098
Conclusion. It barelm>y m> matters.
Premature optimization is the root of all evil.
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boost Composite kem>y m>s - C/C++ - 清泛网 - 专注C/C++及内核技术
...b.equal_range(boost::make_tuple(std::string("White")));
On the other hm>and m>, partial searches without specifm>y m>ing the first kem>y m>s are not allowed.
Bm>y m> default, the corresponding std::less predicate is used for each subkem>y m> of a composite kem>y m>. Alternate comparison predicates can be specified with com...
Numpm>y m> `logical_or` for more than two arguments
...arram>y m>s? (The same question could be asked with regard to Numpm>y m>'s logical_m>and m> m>and m> obtaining the intersection of more than two arram>y m>s.)
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How to check for a valid Base64 encoded string
...to see if a string is Base 64 encoded other than just trm>y m>ing to convert it m>and m> see if there is an error? I have code code like this:
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Code equivalent to the 'let' kem>y m>word in chained LINQ extension method calls
...nce, consider (in LinqPad, sam>y m>) the following expression that creates new rm>and m>om numbers everm>y m> time it's executed:
var seq = EnumerableEx.Generate(
new Rm>and m>om(),
_ => true,
_ => _,
x => x.Next());
To see that new rm>and m>om samples show up everm>y m> time, consider the following
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How can I compare two lists in pm>y m>thon m>and m> return matches
I want to take two lists m>and m> find the values that appear in both.
19 Answers
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jQuerm>y m> UI: Datepicker set m>y m>ear range dropdown to 100 m>y m>ears
... in the drop-down, to restrict which dates mam>y m> be selected use the minDate m>and m>/or maxDate options.
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Undefined behavior m>and m> sequence points
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C++98 m>and m> C++03
This answer is for the older versions of the C++ stm>and m>ard. The C++11 m>and m> C++14 versions of the stm>and m>ard do not formallm>y m> contain 'sequence points'; operations are 'sequenced before' or 'unsequenced' or 'indetermina...