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App Inventor 2 中的响应式设计 · App Inventor 2 中文网
...ng sizes as percentages
Fixed vs. responsive sizing
Detailed example
Special circumstances
Limitation: Drawing and animation
Responsive design and Google Play
One tricky issue in designing apps is making apps that look good on devices with scree...
How to set top-left alignment for UILabel for iOS application?
...e-explaining, I will link to this rather extensive & highly rated question/answer:
Vertically align text to top within a UILabel
The short answer is no, Apple didn't make this easy, but it is possible by changing the frame size.
...
Read and write a String from text file
...
For reading and writing you should use a location that is writeable, for example documents directory. The following code shows how to read and write a simple string. You can test it on a playground.
Swift 3.x - 5.x
let file = "file.txt" //this is the file. we will writ...
微软VS苹果 桌面操作系统的终极一战 - 创意 - 清泛网 - 专注C/C++及内核技术
...果正式发布iCloud之后，这一切似乎有了新的转机。得益于iOS恐怖的用户使用数量，将iOS端的一些重要内容无缝同步到桌面系统，成为苹果开始思考去创造的新的用户需求。在那之后，平台性的应用整合越来越多，从照片流的云端...
How do I read image data from a URL in Python?
...
In Python3 the StringIO and cStringIO modules are gone.
In Python3 you should use:
from PIL import Image
import requests
from io import BytesIO
response = requests.get(url)
img = Image.open(BytesIO(response.content))
...
Python csv string to array
Anyone know of a simple library or function to parse a csv encoded string and turn it into an array or dictionary?
10 Answe...
How to make UIButton's text alignment center? Using IB
...e-C:
[myButton.titleLabel setTextAlignment:UITextAlignmentCenter];
For iOS 6 or higher it's
[myButton.titleLabel setTextAlignment: NSTextAlignmentCenter];
as explained in tyler53's answer
Swift:
myButton.titleLabel?.textAlignment = NSTextAlignment.Center
Swift 4.x and above
myButton.ti...
Read binary file as string in Ruby
...ith so many people looking this up and copy pasting it as a one-liner solution (like so many things on stackoverflow)? After all, it works, and the name for these functions were just an arbitrary choice of the ruby library designers. If only we had some language with synonyms... that still somehow k...
setImmediate vs. nextTick
Node.js version 0.10 was released today and introduced setImmediate . The API changes documentation suggests using it when doing recursive nextTick calls.
...
How can I efficiently download a large file using Go?
...ownload via http (error checks omitted for brevity):
import ("net/http"; "io"; "os")
...
out, err := os.Create("output.txt")
defer out.Close()
...
resp, err := http.Get("http://example.com/")
defer resp.Body.Close()
...
n, err := io.Copy(out, resp.Body)
The http.Response's Body is a Reader, so yo...