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App Inventor 2 使用 MaterialIcons 图标字体，快捷展示专业图标 · App Inventor 2 中文网
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平时布局的话，如果要使用图标，一般需要去找 png 图片，且透明背景的。如果需要根据不同常见图标进行变色的话，就需要准备多张不同样式的图标，还要考虑图片的分辨率等等...
python generator “send” function purpose?
...function, except it can be doing all sorts of computations & callbacks etc. The alternative before this functionality would be to do something like:
def doStuff():
returnDeferred = defer.Deferred()
def gotNextResult(nextResult):
returnDeferred.callback(nextResult / 10)
def g...
Why does Razor _layout.cshtml have a leading underscore in file name?
...o these default names of common pages should be configurable (Layout/Error/etc...).
– Tony Wall
Feb 7 '14 at 11:05
1
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Downloading Java JDK on Linux via wget is shown license page instead
...b http://ppa.launchpad.net/webupd8team/java/ubuntu precise main" | tee -a /etc/apt/sources.list
echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu precise main" | tee -a /etc/apt/sources.list
apt-key adv --keyserver keyserver.ubuntu.com --recv-keys EEA14886
apt-get update
apt-get install...
How to make an array of arrays in Java
...onality (index-based lookup, sorting, uniqueness, FIFO-access, concurrency etc.).
While it's of course good and important to know about Arrays and their usage, in most cases using Collections makes APIs a lot more manageable (which is why new libraries like Google Guava hardly use Arrays at all).
...
Get the current script file name
...ur url using different filers, like mysql_real_escape_string, stripslashes etc..
– Khandad Niazi
Jan 29 '14 at 15:43
...
How do I migrate a model out of one django app and into a new one?
... if not db.dry_run:
# For permissions, GenericForeignKeys, etc to work properly after migrating.
orm['contenttypes.contenttype'].objects.filter(
app_label=self.old_app,
model=self.old_model,
).update(
app_label=s...
汇编常用寄存器及指令基础总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
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DH&DL=DX：数据寄存器，常用于数据传递
为了运用所有的内存空间，8086设定了四个段寄存器，专门用来保存段地址：
CS（Code Segment）：代码段寄存器
DS（Data Segment）：数据段寄存器
SS（Stack Segment）：堆栈段寄存器
ES（Extra ...
ZeroMQ实例-使用ZMQ(ZeroMQ)进行局域网内网络通信 - C/C++ - 清泛网 - 专注C/C++及内核技术
...内容摘要：1）安装zeromq、2）实例说明使用zmq进行网络间的消息发送和接收首先在机器中安装zmq库步骤如下：1）下载zeromq的源代码，Zer...本文内容摘要：1）安装zeromq、2）实例说明使用zmq进行网络间的消息发送和接收
首先在机...
Where is the Java SDK folder in my computer? Ubuntu 12.04
... steps to get Java directory
Step 1:
$ whereis java
java: /usr/bin/java /etc/java /usr/share/java
That tells the command java resides in /usr/bin/java.
Dig again:
Step 2:
$ ls -l /usr/bin/java
lrwxrwxrwx 1 root root 22 2009-01-15 18:34 /usr/bin/java -> /etc/alternatives/java
So, now we k...