大约有 3,800 项符合查询结果（耗时：0.0311秒） [XML]
Is there still any reason to learn AWK?
... you already know regex it won't take long to pick up the basics, and it's fun to see how things were designed back then. It's rather elegant.
share
|
improve this answer
|
f...
How to filter None's out of List[Option]?
...ten wants to work with these elements and not just flatten the list out of fun.
– Frank
Apr 11 '12 at 11:38
Yes, I hes...
How to get the absolute coordinates of a view
...
Now that's the kind of function I expected to find. Unfortunately, I must not be using it properly. I realise it was a known bug that getLocationOnScreen gives a null pointer exception in Android v1.5 (the platform I'm coding for), but testing in v...
How to fix “ImportError: No module named …” error in Python?
...
123
Python does not add the current directory to sys.path, but rather the directory that the scrip...
How do I determine k when using k-means clustering?
...ering
n = 150
g = 6
set.seed(g)
d <- data.frame(x = unlist(lapply(1:g, function(i) rnorm(n/g, runif(1)*i^2))),
y = unlist(lapply(1:g, function(i) rnorm(n/g, runif(1)*i^2))))
mydata<-d
#Plot 3X2 plots
attach(mtcars)
par(mfrow=c(3,2))
#Plot the original dataset
plot(mydata$x,m...
What is the reason for having '//' in Python? [duplicate]
...edited Feb 20 '15 at 6:52
Rizier123
55k1616 gold badges7777 silver badges119119 bronze badges
answered Feb 20 '15 at 6:35
...
Compare JavaScript Array of Objects to Get Min / Max
... etc.) on an array of objects, and return a single result:
myArray.reduce(function(prev, curr) {
return prev.Cost < curr.Cost ? prev : curr;
});
...or you can define that inner function with ES6 function syntax:
(prev, curr) => prev.Cost < curr.Cost ? prev : curr
If you want to be...
Why is Dictionary preferred over Hashtable in C#?
...
Fun. The Dictionary<T> source code looks a lot cleaner and faster. It might be better to use Dictionary and implement your own synchronization. If the Dictionary reads absolutely need to be current, then you'd simply ...
C# Double - ToString() formatting with two decimal places but no rounding
...
I suggest you truncate first, and then format:
double a = 123.4567;
double aTruncated = Math.Truncate(a * 100) / 100;
CultureInfo ci = new CultureInfo("de-DE");
string s = string.Format(ci, "{0:0.00}%", aTruncated);
Use the constant 100 for 2 digits truncate; use a 1 followed by a...
NoSQL Use Case Scenarios or WHEN to use NoSQL [closed]
...
AdaTheDevAdaTheDev
123k2424 gold badges179179 silver badges181181 bronze badges
...