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App Inventor 2 连接方式：AI伴侣、模拟器、USB · App Inventor 2 中文网
...扰、或商业模拟器安装不了，推荐使用AI2Starter模拟器。
Q & A
Q：AI2Starter模拟器可以调整分辨率吗？
A：可以，通过脚本可调整模拟器分辨率。最新版模拟器使用了三星手机样式，屏幕及分辨率较高。
Q：商业模拟器如何使用...
Build an ASCII chart of the most commonly used words in a given text [closed]
... LabVIEW's very happy in its hardware control and measurement niche, but really pretty awful for string manipulation.
– Joe Z
Jul 4 '10 at 6:23
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Regex to Match Symbols: !$%^&*()_+|~-=`{}[]:";'?,./
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The regular expression for this is really simple. Just use a character class. The hyphen is a special character in character classes, so it needs to be first:
/[-!$%^&*()_+|~=`{}\[\]:";'<>?,.\/]/
You also need to escape the other regular expressio...
Stop all active ajax requests in jQuery
I have a problem, when submitting a form all active ajax request fail, and that triggers error event.
16 Answers
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Java URL encoding of query string parameters
... are represented by +, not %20, which is legitimately valid. The %20 is usually to be used to represent spaces in URI itself (the part before the URI-query string separator character ?), not in query string (the part after ?).
Also note that there are three encode() methods. One without Charset as s...
Easy interview question got harder: given numbers 1..100, find the missing number(s) given exactly k
... interesting job interview experience a while back. The question started really easy:
47 Answers
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When to wrap quotes around a shell variable?
... quote it if it can either be empty or contain spaces (or any whitespace really) or special characters (wildcards). Not quoting strings with spaces often leads to the shell breaking apart a single argument into many.
$? doesn't need quotes since it's a numeric value. Whether $URL needs it depends o...
How to let PHP to create subdomain automatically for each user?
...tp://user.mywebsite.com ? Do i have to access htaccess somehow? Is it actually simply possible to create it via pure php code or I need to use some external script-server side language?
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How to Flatten a Multidimensional Array?
...ition are treated like keys with no values, and because keys have to be unique, where two keys match, your values get added to the same key. A simple solution would be to sort the array first. This is behaviour inherent in PHP.
– Martyn Shutt
Sep 19 '15 at 13:...
How to show google.com in an iframe?
...her way is to write a simple proxy page runs on server by yourself, just request from Google and output the result to the client.
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