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扒了一下源码，ESP8285接入App Inventor有4种玩法，第3种最香 - AI 助手 - ...
ESP8285这个芯片怎么接入App Inventor 2？我翻了MIT的源码和我们fun123的30多个扩展，把所有可行路径都摸了一遍。先说结论：不用开发新扩展，现有组件就能用。
ESP8285是什么？和ESP8266啥关系？
ESP8285是乐鑫(Espressif)出的WiFi芯片...
Read stream twice
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edited Apr 27 '17 at 15:09
Captain Man
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How do you round a floating point number in Perl?
...ntf() or printf() is usually the easiest
route.
printf("%.3f", 3.1415926535); # prints 3.142
The POSIX module (part of the standard Perl distribution) implements
ceil(), floor(), and a number of other mathematical and trigonometric
functions.
use POSIX;
$ceil = ceil(3.5); ...
Set selected item of spinner programmatically
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How do I find the caller of a method using stacktrace or reflection?
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Case insensitive regular expression without re.compile?
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edited Jun 26 '16 at 11:26
Mark Amery
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How to implement “select all” check box in HTML?
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Best practices for SQL varchar column length [closed]
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No DBMS I know of has any "optimization" that will make a VARCHAR with a 2^n length perform be...
How to show line number when executing bash script
...or example, if your script reads:
$ cat script
foo=10
echo ${foo}
echo $((2 + 2))
Executing it thus would print line numbers:
$ PS4='Line ${LINENO}: ' bash -x script
Line 1: foo=10
Line 2: echo 10
10
Line 3: echo 4
4
http://wiki.bash-hackers.org/scripting/debuggingtips gives the ultimate PS4 t...
How to read a file line-by-line into a list?
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