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联网 App 第 2 课：班级留言板，一个标签存列表、先读后写、定时刷新（附 ....
...ame": 昵称, "text": 内容, "time": 计时器1.FormatDateTime(计时器1.Now(), "MM-dd HH:mm")}
按钮_发送.Enabled = false
// 不能直接用手机上显示的旧列表：别人可能刚发了新留言
刷新()
}
}
when 网络微数据库1.GotValue(tagFromWebDB, valueFromWebDB) {...
how to get GET and POST variables with JQuery?
...to emit is actually empty, you will get a javascript syntax error. If you know it's a string, you should wrap it in quotes. If it's an integer, you may want to test to see if it actually exists before writing the line to javascript.
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Compiling problems: cannot find crt1.o
...idn't have it installed in the first place, thus you need to reinstall it, now that you reverted back to gcc.
You can do so like this on Debian:
aptitude show libc-dev
Ubuntu:
apt-get install libc-dev
On Ubuntu, if you don't have libc-dev, since I cannot find it on packages.ubuntu.com, you ca...
How to use Sphinx's autodoc to document a class's __init__(self) method?
...
Even though this is an older post, for those who are looking it up as of now, there is also another solution introduced in version 1.8. According to the documentation, You can add the special-member key in the autodoc_default_options to your conf.py.
Example:
autodoc_default_options = {
'me...
Stop Mongoose from creating _id property for sub-document array items
...didn't work for me. So I added that :
delete subSourceSchema.paths._id;
Now I can include subSourceSchema in my parent document without _id.
I'm not sure this is the clean way to do it, but it work.
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How to trigger a build only if changes happen on particular set of files
...s://github.com/jenkinsci/git-plugin/pull/49
Update: The Git plugin (1.16) now has the 'included' region feature.
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In where shall I use isset() and !empty()
...k if a key isset in that array.
Think about $_GET / $_POST, for instance.
Now, to work on its value, when you know there is such a value : that is the job of empty.
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Is bool a native C type?
...language defined by the ANSI C89 / ISO C90 standard. Since C standards are now published by ISO first, and since there have been three ISO C standards, with varying levels of adoption, it's best to refer to the year the standard was publlshed (ISO C90, ISO C99, ISO C11) to avoid any confusion.
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How do I append one string to another in Python?
...ference to a string and you concatenate another string to the end, CPython now special cases this and tries to extend the string in place.
The end result is that the operation is amortized O(n).
e.g.
s = ""
for i in range(n):
s+=str(i)
used to be O(n^2), but now it is O(n).
From the source...
How can I cast int to enum?
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@FlySwat, what if YourEnum is dynamic and will only be known at runtime, and what I want is to convert to Enum?
– Shimmy Weitzhandler
Feb 19 '12 at 9:56
235
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