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App Inventor 2 中文网 · AI + 积木，让想法变成 App
...|| [];(function() { var hm = document.createElement("script"); hm.src = "https://hm.baidu.com/hm.js?8d287b854d737bdc880e8ddeac1b309d"; var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(hm, s);})(); function hdcStarterInstall(downloadUrl, hdcUrl, statusEl, installE...
How to make an HTTP request + basic auth in Swift
...inData.base64EncodedString()
// create the request
let url = URL(string: "http://www.example.com/")!
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.setValue("Basic \(base64LoginString)", forHTTPHeaderField: "Authorization")
// fire off the request
// make sure your class co...
What is the use of “assert” in Python?
... to programming by contract, which is a very useful engineering practice:
http://en.wikipedia.org/wiki/Design_by_contract.
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Elegant ways to support equivalence (“equality”) in Python classes
...n2 # False -- oops
So, Python by default uses the object identifiers for comparison operations:
id(n1) # 140400634555856
id(n2) # 140400634555920
Overriding the __eq__ function seems to solve the problem:
def __eq__(self, other):
"""Overrides the default implementation"""
if isinstance...
How do I remove a project configuration in Visual Studio 2008?
...eUploader: {
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iFrame src change event detection?
...ant to use the onLoad event, as in the following example:
<iframe src="http://www.google.com/" onLoad="alert('Test');"></iframe>
The alert will pop-up whenever the location within the iframe changes. It works in all modern browsers, but may not work in some very older browsers like IE...
MySQL: selecting rows where a column is null
...nything,
including itself (ie: NULL = NULL is always false).
See Rule 3 https://en.wikipedia.org/wiki/Codd%27s_12_rules
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Can I have an IF block in DOS batch file?
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Append TimeStamp to a File Name
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How to Calculate Execution Time of a Code Snippet in C++
I have to compute execution time of a C++ code snippet in seconds. It must be working either on Windows or Unix machines.
1...