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AppInventor2中的二进制数据以什么样的形式传递？字节列表、字节数组是什么...
1、byte[] 类型（字节数组）的字段：App Inventor 无法直接处理字节数组，但它们可以作为扩展之间的通用 Object 类型变量进行交换。
MQTT拓展中的字节数组的处理方式就是这种，直接转换成byte[]：
@SimpleFunction(description = "Publishe...
Practical usage of setjmp and longjmp in C
...e setjmp started. So allocations, locks, half-initialized data structures, etc, are still allocated, locked and half-initialized when you get back to where setjmp was called. This means, you have to really care for the places where you do this, that it's REALLY ok to call longjmp without causing MOR...
Does Swift have documentation generation support?
...ll be ordered, starting from 1
/// 5. But be sensible and just use 1, 2, 3 etc…
///
/// ---
///
/// More Stuff
/// ==========
///
/// Code
/// ----
///
/// Use backticks for inline `code()`. Indentations of 4 spaces or more will create a code block, handy for example usage:
///
/// // Create a...
awk without printing newline
... Minor note: never use printf $0, since $0 may contain strings like %F, etc... Following easily fails (at least with GAWK 3.1.5): echo "%F"|awk '{printf $0}'. Use the printf "%s",$0 instead.
– Vlad
Dec 21 '16 at 5:51
...
What are rvalues, lvalues, xvalues, glvalues, and prvalues?
...ss, a pointer, the user can determine whether two copies are identical, etc.
can be moved from – i.e. we are allowed to leave to source of a "copy" in some indeterminate, but valid state
This led me to the conclusion that there are exactly three kinds of
values (using the regex not...
How to iterate through all git branches using bash script
...d historical implementations of normal Git commands (add, checkout, merge, etc.) use this same interface).
The plumbing command you want is git for-each-ref:
git for-each-ref --shell \
--format='git log --oneline %(refname) ^origin/master' \
refs/heads/
Note: You do not need the remotes/ pr...
When do items in HTML5 local storage expire?
...the only real difference between the regular storage methods. Get, remove, etc work the same.
If you don't need that much functionality, you can simply store a time stamp with the value (via JSON) and check it for expiry.
Noteworthy, there's a good reason why local storage is left up to the user....
Python Logging (function name, file name, line number) using a single file
...supports stack level skipping out-of-the-box: methods like log(), debug(), etc. now accept a stacklevel argument. See the docs.
– amain
Apr 22 at 23:10
add a comment
...
Difference between __str__ and __repr__?
...implementing a date/time abstraction, the str can be "2010/4/12 15:35:22", etc. The goal is to represent it in a way that a user, not a programmer, would want to read it. Chop off useless digits, pretend to be some other class — as long is it supports readability, it is an improvement.
Container...
Converting a view to Bitmap without displaying it in Android?
...flate(layoutID, null);
//Do some stuff to the view, like add an ImageView, etc.
view.layout(0, 0, width, height);
Bitmap getViewBitmap(View view)
{
//Get the dimensions of the view so we can re-layout the view at its current size
//and create a bitmap of the same size
int width = view....