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How to use enums as flags in C++?
...expression HasClaws | CanFly? This is not what enums are for. Use integers and constants.
– Lightness Races in Orbit
Mar 27 '15 at 17:49
27
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How do I check if a type is a subtype OR the type of an object?
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Here's the options:
Use Type.IsSubclassOf
Use Type.IsAssignableFrom
is and as
Type.IsSubclassOf
As you've already found out, this will not work if the two types are the same, here's a sample LINQPad program that demonstrates:
void Main()
{
typeof(Derived).IsSubclassOf(typeof(Base)).Dump(...
Why are floating point numbers inaccurate?
...t numbers are represented a lot like scientific notation: with an exponent and a mantissa (also called the significand). A very simple number, say 9.2, is actually this fraction:
5179139571476070 * 2 -49
Where the exponent is -49 and the mantissa is 5179139571476070. The reason it is impossibl...
$on and $broadcast in angular
I have a footerController and codeScannerController with different views.
4 Answers
4
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Find the Smallest Integer Not in a List
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If the datastructure can be mutated in place and supports random access then you can do it in O(N) time and O(1) additional space. Just go through the array sequentially and for every index write the value at the index to the index specified by value, recursively placin...
What is more efficient: Dictionary TryGetValue or ContainsKey+Item?
...y, 0);. But i think that TryGetValue is still more efficient since the get and set of the indexer property is used, isn't it?
– Tim Schmelter
Oct 1 '15 at 10:44
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What is the garbage collector in Java?
I am new to Java and confused about the garbage collector in Java. What does it actually do and when does it comes into action. Please describe some of the properties of the garbage collector in Java.
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Push existing project into Github
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This fixed my problem but I couldn't do command 4 git remote add origin <project url> saying command syntax not correct. I ignored it and it worked
– Khalil Khalaf
Jun 25 '16 at 2:33
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What does O(log n) mean exactly?
I am learning about Big O Notation running times and amortized times. I understand the notion of O(n) linear time, meaning that the size of the input affects the growth of the algorithm proportionally...and the same goes for, for example, quadratic time O(n2) etc..even algorithms, such as permu...
C/C++ check if one bit is set in, i.e. int variable
... there such a way to check if bit 3 in temp is 1 or 0 without bit shifting and masking.
21 Answers
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