大约有 47,000 项符合查询结果(耗时:0.0626秒) [XML]
What does $@ mean in a shell script?
...drea Bergonzo
1,61422 gold badges1515 silver badges2323 bronze badges
answered Apr 3 '12 at 13:30
HarHar
3,25111 gold badge1616 si...
COALESCE Function in TSQL
...
answered Nov 13 '12 at 18:40
Bill MeliusBill Melius
1,03377 silver badges88 bronze badges
...
Java: method to get position of a match in a String?
...ward (or backward) starting at the specified index].
String text = "0123hello9012hello8901hello7890";
String word = "hello";
System.out.println(text.indexOf(word)); // prints "4"
System.out.println(text.lastIndexOf(word)); // prints "22"
// find all occurrences forward
for (int i = -1; (i = te...
Is there a python equivalent of Ruby's 'rvm'?
...
Olivier VerdierOlivier Verdier
39.3k2626 gold badges9292 silver badges8989 bronze badges
...
Haversine Formula in Python (Bearing and Distance between two GPS points)
...
243
Here's a Python version:
from math import radians, cos, sin, asin, sqrt
def haversine(lon1, la...
How to Add Stacktrace or debug Option when Building Android Studio Project
...swered Feb 10 '14 at 10:19
pyus13pyus13
23.7k77 gold badges9292 silver badges107107 bronze badges
...
How do I pass command line arguments to a Node.js program?
...
33 Answers
33
Active
...
Minimizing NExpectation for a custom distribution in Mathematica
..., s, Log[x]]/x;
If we plot pdf2 it looks exactly as your Plot
Plot[pdf2[3.77, 1.34, -2.65, 0.40, x], {x, 0, .3}]
Now to the expected value. If I understand it correctly we have to integrate x * pdf[x] from -inf to +inf for a normal expected value.
x * pdf[x] looks like
Plot[pdf2[3.77, 1.34...
How can I truncate a double to only two decimal places in Java?
For example I have the variable 3.545555555, which I would want to truncate to just 3.54.
15 Answers
...
Global access to Rake DSL methods is deprecated
I am working through the Ruby on Rails 3 tutorial book and typed the following on the command line:
5 Answers
...