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App Inventor 2 百度网盘拓展：授权、文件列表、下载、上传 · App Inventor 2 中文网
...容不同才重命名、3 覆盖。
常见问题
Q：列文件、下载一直报「身份验证失败，请重新授权」？
A：access_token 过期（约 30 天）或者填错了，按示例 1 重新授权即可。
Q：上传报「文件或目录名错误，或无权访...
Programmatically obtain the Android API level of a device?
...Build.VERSION.SDK_INT). For example you can run some piece of code which requires newer API in the following way (it will execute if the current device's API level is at least 4)
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.DONUT) {
}
To obtain user visible Android Version use:
Build.VER...
What is std::move(), and when should it be used?
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Move-semantics require the moved object remain valid, which is not an incorrect state. (Rationale: It still has to destruct, make it work.)
– GManNickG
Aug 5 '10 at 16:37
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How do I set a cookie on HttpClient's HttpRequestMessage
...rying to use the web api's HttpClient to do a post to an endpoint that requires login in the form of an HTTP cookie that identifies an account (this is only something that is #ifdef 'ed out of the release version).
...
Select between two dates with Django
I am looking to make a query that selects between dates with Django.
4 Answers
4
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How can I get query string values in JavaScript?
Is there a plugin-less way of retrieving query string values via jQuery (or without)?
73 Answers
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How to make “if not true condition”?
...
try
if ! grep -q sysa /etc/passwd ; then
grep returns true if it finds the search target, and false if it doesn't.
So NOT false == true.
if evaluation in shells are designed to be very flexible, and many times doesn't require chains of ...
Proper way to exit iPhone application?
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In Tech Q&A QA1561, Apple strongly discourages use of exit as it makes the app appear to have crashed. developer.apple.com/iphone/library/qa/qa2008/qa1561.html
– progrmr
May 6 '10 at 12:47
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How to get the first line of a file in a bash script?
... anyhow, even if the latter didn't fail for the reasons described in BashFAQ #24.
– Charles Duffy
Aug 1 '17 at 16:21
....
Python base64 data decode
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import base64
coded_string = '''Q5YACgA...'''
base64.b64decode(coded_string)
worked for me. At the risk of pasting an offensively-long result, I got:
>>> base64.b64decode(coded_string)
2: 'C\x96\x00\n\x00\x00\x00\x00C\x96\x00\x1b\x00\x00\x00\x00...