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A route named “x” is already in the route collection. Route names must be unique. Exception with ASP
I'm doing an ASP.NET MVC 3 web service and I keep getting this exception intermittently.
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How can I test what my readme.md file will look like before committing to github?
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Android : Check whether the phone is dual SIM
...rdo Javier Huerta YeroEduardo Javier Huerta Yero
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What happens when there's insufficient memory to throw an OutOfMemoryError?
...mputation of the heap stack in advance.
The Structure of the JVM, Chapter 3, section 3.5.2 states:
If Java virtual machine stacks can be dynamically expanded, and expansion is attempted but insufficient memory can be made available
to effect the expansion, or if insufficient memory can be ...
Why does MYSQL higher LIMIT offset slow the query down?
... FROM mytable
ORDER BY
id
LIMIT 10000, 30
) q
JOIN mytable t
ON t.id = q.id
See this article:
MySQL ORDER BY / LIMIT performance: late row lookups
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How does collections.defaultdict work?
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631
Usually, a Python dictionary throws a KeyError if you try to get an item with a key that is not...
App Inventor 2 低功耗蓝牙(BLE) 硬件接入、数据通信及IO控制 · App Inventor 2 中文网
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1、硬件接线（特别注意：VCC 3.3v 或 5v 请参阅说明书，不要弄错以免烧坏硬件）
2、串口工具测试
什么是串口工具？
测试与BLE硬件通信（数据透传）
AT控制指令
IO口控制
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App Inventor 2 UrsPahoMqttClient 拓展 - 物联网轻量级MQTT协议 · App Inventor 2 中文网
...nary / FromDictionary
错误处理
MQTT服务质量（QoS）：3个等级
保留消息（RetainFlag）
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《App Inventor 2 MQTT拓展入门（保姆级教程）》
最新版拓展下载：
de.ullisroboterseite.ursai2pahomqtt.aix
MQTT（Message Queuing Telemetry Tr...
Can we have multiline comments in a Java properties file?
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153
Unfortunately not! Java properties file only have single line # comments.
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In Ruby, how do I skip a loop in a .each loop, similar to 'continue' [duplicate]
...se next:
(1..10).each do |a|
next if a.even?
puts a
end
prints:
1
3
5
7
9
For additional coolness check out also redo and retry.
Works also for friends like times, upto, downto, each_with_index, select, map and other iterators (and more generally blocks).
For more info see http://rub...