大约有 42,000 项符合查询结果（耗时：0.0514秒） [XML]
Convert an integer to a float number
...oint numbers
complex64 the set of all complex numbers with float32 real and imaginary parts
complex128 the set of all complex numbers with float64 real and imaginary parts
byte alias for uint8
rune alias for int32
Which means that you need to use float64(integer_value).
...
creating a random number using MYSQL
I would like to know is there a way to select randomly generated number between 100 and 500 along with a select query.
6 A...
Getting output of system() calls in Ruby
If I call a command using Kernel#system in Ruby, how do I get its output?
15 Answers
...
How to print formatted BigDecimal values?
I have a BigDecimal field amount which represents money, and I need to print its value in the browser in a format like $123.00 , $15.50 , $0.33 .
...
How do I iterate over the words of a string?
...re's another way to extract tokens from an input string, relying only on standard library facilities. It's an example of the power and elegance behind the design of the STL.
#include <iostream>
#include <string>
#include <sstream>
#include <algorithm>
#include <iterator&g...
Can I get git to tell me all the files one user has modified?
...utput nothing but filenames. Given that fact, what are the options --stat and --pretty=format:"" accomplishing? Could you leave them out?
– Jonah
Apr 10 '15 at 21:20
1
...
Is it a good practice to place C++ definitions in header files?
...al style with C++ has always to put class declarations in an include file, and definitions in a .cpp file, very much like stipulated in Loki's answer to C++ Header Files, Code Separation . Admittedly, part of the reason I like this style probably has to do with all the years I spent coding Modula-2...
Changing font size and direction of axes text in ggplot2
I am plotting a graph with a categorical variable on the x axis and a numerical variable on the y axis.
7 Answers
...
LINQ Using Max() to select a single row
I'm using LINQ on an IQueryable returned from NHibernate and I need to select the row with the maximum value(s) in a couple of fields.
...
GCM with PHP (Google Cloud Messaging)
...tiple registration IDs via PHP CURL.
// Payload data you want to send to Android device(s)
// (it will be accessible via intent extras)
$data = array('message' => 'Hello World!');
// The recipient registration tokens for this notification
// https://developer.android.com/google/gcm/
$i...