大约有 43,000 项符合查询结果（耗时：0.0441秒） [XML]
Why can't C# interfaces contain fields?
For example, suppose I want an ICar interface and that all implementations will contain the field Year . Does this mean that every implementation has to separately declare Year ? Wouldn't it be nicer to simply define this in the interface?
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How to get names of enum entries?
...at the following enumeration:
enum colors { red, green, blue };
Will be converted essentially to this:
var colors = { red: 0, green: 1, blue: 2,
[0]: "red", [1]: "green", [2]: "blue" }
Because of this, the following will be true:
colors.red === 0
colors[colors.red] === "red"
co...
Implement Stack using Two Queues
...eue1 is bigger than 1, pipe dequeued items from queue1 into queue2
dequeue and return the last item of queue1, then switch the names of queue1 and queue2
Version B (efficient pop):
push:
enqueue in queue2
enqueue all items of queue1 in queue2, then switch the names of queue1 and queue2
pop:
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Find XOR of all numbers in a given range
You are given a large range [a,b] where 'a' and 'b' can be typically between 1 and 4,000,000,000 inclusive. You have to find out the XOR of all the numbers in the given range.
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Tools to get a pictorial function call graph of code [closed]
...he functions called from a function in MS VS2005 using the Object browser, and in MSVC 6.0 also, this only shows functions called from a particular function in a non-graphical kind of display. Additionally, it does not show the function called starting from say main() , and then the functions calle...
Creating a ZIP Archive in Memory Using System.IO.Compression
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Thanks! i just added the line of code to convert bytes to zip file
– Elnoor
Sep 20 '17 at 21:30
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android ellipsize multiline textview
...the ellipse, but only 2 lines are displayed. I tried to change the minimum and maximum number of rows of the component but it changes nothing.
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How to print the contents of RDD?
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You can convert your RDD to a DataFrame then show() it.
// For implicit conversion from RDD to DataFrame
import spark.implicits._
fruits = sc.parallelize([("apple", 1), ("banana", 2), ("orange", 17)])
// convert to DF then show it...
Can I use a collection initializer for Dictionary entries?
...KeyValuePair<TKey, TValue>>?
– Shimmy Weitzhandler
Dec 17 '12 at 21:48
after C# 3.0 you can use var instead o...
Find out if ListView is scrolled to the bottom?
...tion.
Implement an OnScrollListener, set your ListView's onScrollListener and then you should be able to handle things correctly.
For example:
private int preLast;
// Initialization stuff.
yourListView.setOnScrollListener(this);
// ... ... ...
@Override
public void onScroll(AbsListView lw, fin...