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App Inventor 2 图片处理教程 - 缩放、裁剪、存储与转换 · App Inventor 2 中文网
... }
}
when Button13.Click() {
var base64 = Canvas1.Save()
Web1.Url = "https://api.example.com/upload/avatar"
Web1.PostText(join("image=", base64))
}
when Web1.GotText(url, responseCode, responseType, responseContent) {
if responseContent == "success" {
Label1.Text = "✅ 头像上传...
How to download source in ZIP format from GitHub?
...
With wget it's even shorter: wget https://github.com/zoul/Finch/archive/master.zip
– Noam Manos
May 21 at 9:49
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How to redirect 404 errors to a page in ExpressJS?
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I found this example quite helpful:
https://github.com/visionmedia/express/blob/master/examples/error-pages/index.js
So it is actually this part:
// "app.router" positions our routes
// above the middleware defined below,
// this means that Express will attem...
JQuery: How to call RESIZE event only once it's FINISHED resizing?
...ant to fire a callback only after a delay, like the resize event, or else.
https://github.com/yckart/jquery.unevent.js
;(function ($) {
var methods = { on: $.fn.on, bind: $.fn.bind };
$.each(methods, function(k){
$.fn[k] = function () {
var args = [].slice.call(arguments...
Bash/sh - difference between && and ;
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
SQLAlchemy default DateTime
...p() and clock_timestamp() which do change within a transaction. Docs here: https://www.postgresql.org/docs/current/static/functions-datetime.html#FUNCTIONS-DATETIME-CURRENT
UTC timestamp
If you want to use UTC timestamps, a stub of implementation for func.utcnow() is provided in SQLAlchemy documenta...
Create Directory When Writing To File In Node.js
...Node's fs module, but you can do all of that simply with my mkpath module: https://github.com/jrajav/mkpath
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Warning: “format not a string literal and no format arguments”
...lly fix the problem.
EDIT: As of clang, the pragma has changed. See this: https://stackoverflow.com/a/17322337/3937
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How to get Ruby / Homebrew / RVM to work on Yosemite?
...tall command line tools for Xcode 6
Reinstall brew:
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
Once brew is installed, rvm will work:
rvm install ruby
Worked for me, yahoo!
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Method call if not null in C#
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Yes, in C# 6.0 -- https://msdn.microsoft.com/en-us/magazine/dn802602.aspx.
object?.SomeMethod()
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