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在APP Inventor的BLE组件使用RequestMTU方法之后，发送的字符数依旧限制在2...
目前APP是能连接上蓝牙，也能传输数据，但是发送和接受的数据都是20字节的分包。使用BLE调试宝，在里面修改MTU，返回的值是512，并且是修改成功的，但是在编程中使用RequestMTU方式设置512,，并且读取返回值也是512，然后调用...
How can I set multiple CSS styles in JavaScript?
...ssign:
Object.assign(yourelement.style,{fontsize:"12px",left:"200px",top:"100px"});
This also gives you ability to merge styles, instead of rewriting the CSS style.
You can also make a shortcut function:
const setStylesOnElement = function(styles, element){
Object.assign(element.style, styl...
How to convert an integer to a string in any base?
..., 131, 96, 431, 285, 524, 486, 28, 23, 16, 82, 292, 538, 149, 25, 41, 483, 100, 517, 131, 28, 0, 435, 197, 264, 455],
Which you can later convert to any base you want
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Java: how can I split an ArrayList in multiple small ArrayLists?
How can I split an ArrayList (size=1000) in multiple ArrayLists of the same size (=10) ?
18 Answers
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Making a triangle shape using xml definitions?
...s:android="http://schemas.android.com/apk/res/android"
android:height="100dp"
android:width="100dp"
android:viewportHeight="100"
android:viewportWidth="100" >
<group
android:name="triableGroup">
<path
android:name="triangle"
and...
How to determine the Boost version on a system?
...
std::cout << "Using Boost "
<< BOOST_VERSION / 100000 << "." // major version
<< BOOST_VERSION / 100 % 1000 << "." // minor version
<< BOOST_VERSION % 100 // patch level
<< std::endl;
Outpu...
Numpy: find first index of value fast
...he time to find it.
The array had 1 million elements and tests were run 100 times. Results still fluctuate a bit, but the qualitative trend is clear: Python and f2py quit at the first element so they scale differently. Python gets too slow if the needle is not in the first 1%, whereas f2py is fas...
SqlException from Entity Framework - New transaction is not allowed because there are other threads
...:
foreach (var client in clientList.OrderBy(c => c.Id).QueryInChunksOf(100))
{
// do stuff
context.SaveChanges();
}
The queryable object you call this method on must be ordered. This is because Entity Framework only supports IQueryable<T>.Skip(int) on ordered queries, which make...
Set ImageView width and height programmatically?
...s:
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(100, 100);
iv.setLayoutParams(layoutParams);
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range() for floats
...his could produce unpredictable results like:
>>> list(frange(0, 100, 0.1))[-1]
99.9999999999986
To get the expected result, you can use one of the other answers in this question, or as @Tadhg mentioned, you can use decimal.Decimal as the jump argument. Make sure to initialize it with a ...