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【基础入门班】【大作业】爱学习App - App Inventor 2 中文网 - 清泛IT社区...
...结构参考---------------------------
练习模式：
英文，中文
hello,你好
...
题目类型，题面，正确答案，干扰答案
选择题，1+1=？，2，3,4,5
对错题，1+1=2？，T
回答题，1+1=？2
语音题，读出单词hello，hello
...
方向2：成语接龙Ap...
How do I interpolate strings?
...ample:
var planetName = "Bob";
var myName = "Ford";
var formattedStr = $"Hello planet {planetName}, my name is {myName}!";
// formattedStr should be "Hello planet Bob, my name is Ford!"
This is syntactic sugar for:
var formattedStr = String.Format("Hello planet {0}, my name is {1}!", planetName...
How to open every file in a folder?
...
csvfiles = [] #list to store all csv files found at location
filebeginwithhello = [] # list to keep all files that begin with 'hello'
otherfiles = [] #list to keep any other file that do not match the criteria
for file in os.listdir(location):
try:
if file.endswith(".csv"):
...
How to pass command line arguments to a rake task
... task from the command line, pass it the arguments in []s
rake task_name['Hello',4]
will output
Hello
Hello
Hello
Hello
and if you want to call this task from another task, and pass it arguments, use invoke
task :caller do
puts 'In Caller'
Rake::Task[:task_name].invoke('hi',2)
end
then ...
jQuery.click() vs onClick
...ById('myelement');
myEl.addEventListener('click', function() {
alert('Hello world');
}, false);
myEl.addEventListener('click', function() {
alert('Hello world again!!!');
}, false);
http://jsfiddle.net/aj55x/1/
Why use addEventListener? (From MDN)
addEventListener is the way to...
Operator Overloading with C# Extension Methods
... static void ReceiveImportantMessage(StringBuilderWrapper sb) {
sb += "Hello World!";
}
}
public class StringBuilderWrapper {
public StringBuilderWrapper(StringBuilder sb) { StringBuilder = sb; }
public StringBuilder StringBuilder { get; private set; }
public static implicit operator...
Get url without querystring
...System.Uri
Uri url = new Uri("http://www.example.com/mypage.aspx?myvalue1=hello&myvalue2=goodbye");
string path = String.Format("{0}{1}{2}{3}", url.Scheme,
Uri.SchemeDelimiter, url.Authority, url.AbsolutePath);
Or you can use substring
string url = "http://www.example.com/mypage.aspx?my...
What techniques can be used to define a class in JavaScript, and what are their trade-offs?
...'ve used so far
Example 1:
obj = new Object();
obj.name = 'test';
obj.sayHello = function() {
console.log('Hello '+ this.name);
}
Example 2:
obj = {};
obj.name = 'test';
obj.sayHello = function() {
console.log('Hello '+ this.name);
}
obj.sayHello();
Example 3:
var obj = function(name...
Google Maps API v3: How do I dynamically change the marker icon?
...anberra_hero_image.jpg"></img>', 51.508742, -0.120850, '<p> Hello - 1 </p>'],
['title-2', '<img style="width:100%;" src="canberra_hero_image.jpg"></img>', 51.508742, -0.420850, '<p> Hello - 2 </p>'],
['title-3', '<img style="wid...
vbscript output to console
...teObject("Scripting.FileSystemObject").GetStandardStream(1)
WScript.Echo "Hello"
WScript.StdOut.Write "Hello"
WScript.StdOut.WriteLine "Hello"
Stdout.WriteLine "Hello"
Stdout.Write "Hello"
WScript.Echo will output to console but only if the script is started using cscript.exe. It will output to m...