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Can extension methods be applied to interfaces?
...for a class:
public static class TopologyExtensions
{
public static void CountNodes(this ITopology topology)
{
// ...
}
}
There's nothing particularly different about extension methods as far as interfaces are concerned; an extension method is just a static method that the com...
Unable to modify ArrayAdapter in ListView: UnsupportedOperationException
...
I tried it out, myself...Found it didn't work. So i check out the source code of ArrayAdapter and found out the problem. The ArrayAdapter, on being initialized by an array, converts the array into a AbstractList (List) which cannot be modified.
Solution
Use a...
Convert String to equivalent Enum value
...public enum Day {
SUNDAY, MONDAY, TUESDAY, WEDNESDAY,
THURSDAY, FRIDAY, SATURDAY
}
You could do this:
String day = "SUNDAY";
Day dayEnum = Day.valueOf(day);
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Convert UNIX epoch to Date object
...
Try dividing that by 1000: as.POSIXct(1415560016876/1000, origin="1970-01-01") gets "2014-11-09 13:06:56.875 CST" and you need to ensure whether seconds are expected (as for R) or milliseconds.
– Dirk Eddelbue...
BLE（二）信道&数据包&协议栈格式 - 创客硬件开发 - 清泛IT社区，...
...BLUETOOTH SPECIFICATION Version 4.0 [Vol 6] Part B 2.4）
LLID（逻辑链路ID）：0x01表示该数据包是一个帧的延续内容，或者这是一个空的“逻辑链路控制及适配协议”数据包；0x02表示一个“逻辑链路控制及适配协议”数据包的开始...
New lines inside paragraph in README.md
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
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How to change MySQL column definition?
...t 20 '09 at 15:19
Daniel RikowskiDaniel Rikowski
64.6k5151 gold badges234234 silver badges316316 bronze badges
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Clear back stack using fragments
I ported my Android app to honeycomb and I did a big refactor in order to use fragments. In my previous version, when I pressed the Home button I used to do a ACTIVITY_CLEAR_TOP in order to reset the back stack.
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How to test if one java class extends another at runtime?
...ou want to check for direct superclass/subclass relationships, Tim has provided an answer as well.
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Install parent POM without building Child modules
...mvn clean install without extra options.
You can also have the parent outside the aggregator so you can re-use it between more projects.
There are numerous benefits to keeping the parent and the aggregator as two separate things. But in the end, you choose what's best for your project/environment....