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【BLE技术内幕】BLE技术揭秘 - 创客硬件开发 - 清泛IT论坛，有思想、有深度
...，他希望越简单越好，对他而言，他希望调用一个简单的API就能完成这件事，比如send(0x53)，实际上我们的BLE协议栈就是这样设计的，开发者只需调用send(0x53)就可以把数据发送出去了，其余的事情BLE协议栈帮你搞定。很多人会想...
What’s the difference between ScalaTest and Scala Specs unit test frameworks?
...). So basically in ScalaTest I try to provide more functionality with less API.
Another general design attitude difference between specs and ScalaTest
involves implicit conversions. By default you get only one implicit conversion when you use ScalaTest, which is the one that puts the === operator o...
What is the most efficient Java Collections library? [closed]
...ttleneck in my code (in my experience) this is "better" than a collections API which may be more efficient but doesn't make my code as readable.
Given that the overlap between Trove and the Guava is pretty much nil, perhaps you could clarify what you're actually looking for from a collections libra...
What is the best way to use a HashMap in C++?
I know that STL has a HashMap API, but I cannot find any good and thorough documentation with good examples regarding this.
...
C# generic list how to get the type of T? [duplicate]
...nswer is the approach I use for this, but for simplicity (and a friendlier API?) you can define a property in the collection base class if you have one such as:
public abstract class CollectionBase<T> : IList<T>
{
...
public Type ElementType
{
get
{
return...
Convert String[] to comma separated string in java
...
You can also use org.apache.commons.lang.StringUtils API to form a comma separated result from string array in Java.
StringUtils.join(strArr,",");
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Recommended way of making React component/div draggable
...esult in a NaN. See the MDN article: developer.mozilla.org/en-US/docs/Web/API/Element/…
– Andru
Mar 25 '15 at 22:47
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Apache POI Excel - how to configure columns to be expanded?
I am using Apache POI API to generate excel spreadsheet to output some data.
11 Answers
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How do I check if an HTML element is empty using jQuery?
...$('#element').is(':empty')){
//do something
}
for more info see http://api.jquery.com/is/ and http://api.jquery.com/empty-selector/
EDIT:
As some have pointed, the browser interpretation of an empty element can vary. If you would like to ignore invisible elements such as spaces and line breaks...
Why JavaScript rather than a standard browser virtual machine?
...e "Machine language" for the web, with other better designed languages and APIs compile down to it (and cater for different runtime engine foibles).
I don't think, however, any of these "better designed languages" will be Java, Python or Ruby. Javascript is, despite the ability to be used elsewhere...