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What exactly does big Ө notation represent?
I'm really confused about the differences between big O, big Omega, and big Theta notation.
6 Answers
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What does flushing the buffer mean?
I am learning C++ and I found something that I can't understand:
3 Answers
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App Inventor 2 数学代码块 · App Inventor 2 中文网
...+ )
减 ( - )
乘 ( * )
除 ( / )
幂运算 ( ^ )
随机整数 (random integer)
随机小数 (random fraction)
设定随机数种子 (random set seed to)
最小值 (min)
最大值 (max)
平方根 (square root)
绝对值 (abs)
相反数 (neg)
对数 (log)
e^
四舍五入...
Scatterplot with too many points
...+ geom_point(alpha = 0.3)
Another convenient way to deal with this is (and probably more appropriate for the number of points you have) is hexagonal binning:
ggplot(df,aes(x=x,y=y)) + stat_binhex()
And there is also regular old rectangular binning (image omitted), which is more like your tr...
Window.open and pass parameters by post method
...rect, with encoding of values in the HTML code), just open an empty window and post a form to it.
Example:
<form id="TheForm" method="post" action="test.asp" target="TheWindow">
<input type="hidden" name="something" value="something" />
<input type="hidden" name="more" value="someth...
LINQ Orderby Descending Query
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You need to choose a Property to sort by and pass it as a lambda expression to OrderByDescending
like:
.OrderByDescending(x => x.Delivery.SubmissionDate);
Really, though the first version of your LINQ statement should work. Is t.Delivery.SubmissionDate act...
JavaScript: replace last occurrence of text in a string
... two ways to make a RegExp instance: the constructor (new RegExp(string)), and the inline syntax (/something/). You don't need the "/" characters when you're using the RegExp constructor.
– Pointy
Mar 21 '15 at 21:26
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Using custom std::set comparator
... of the items in a set of integers to be lexicographic instead of numeric, and I can't get the following to compile with g++:
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In absence of preprocessor macros, is there a way to define practical scheme specific flags at proje
Before swift I would define a set of schemes for alpha, beta, and distribution builds. Each of these schemes would have a set of macros that were defined to gate certain behaviors at the project level. The simplest example is the DEBUG=1 macro that is defined by default for all Xcode projects in t...
Determine if 2 lists have the same elements, regardless of order? [duplicate]
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You can simply check whether the multisets with the elements of x and y are equal:
import collections
collections.Counter(x) == collections.Counter(y)
This requires the elements to be hashable; runtime will be in O(n), where n is the size of the lists.
If the elements are also unique, y...