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Callback functions in C++
...backs:
The first callback is called if a function value and the gradient based on a vector of input values is required (logic callback: function value determination / gradient derivation).
The second callback is called once for each algorithm step and receives certain information about the converg...
HTTP Error 403.14 - Forbidden - The Web server is configured to not list the contents of this direct
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answered Aug 16 '14 at 15:09
user3943211user3943...
Why doesn't .NET/C# optimize for tail-call recursion?
...ate given recent JIT changes). Note that the CLR changes for 4.0 the x86, x64 and ia64 will respect it.
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Post parameter is always null
... case I am sending data across the wire which is zipped json which is then base64'd. All this from an android app.
The original signature of my web endpoint looked like this (using [FromBody]) :
My fix for this issue was to revert to using a HttpRequestMessage for the signature of my endpoint...
Get average color of image via Javascript
...efinitely the best way to do this in the client. SVG is not, SVG is vector based. After I get the execution down, the next thing I want to do is get this running in the canvas (maybe with a webworker for each pixel's overall distance calculation).
Another thing to think about is that RGB is not a g...
How can I deploy an iPhone application from Xcode to a real iPhone device?
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Actually, update: after changing base SDK in project settings from iphoneos to iOS 4.3, things work. Although xcode says 'Error launching remote program: failed to get the task for process' I can launch the app by clicking on it.
– nos...
MQTT物联网协议完全实践指南 · App Inventor 2 中文网
...载：
de.ullisroboterseite.ursai2pahomqtt.aix
完整示例项目：
mqtt_demo.aia
MQTT协议深度解析
1. 协议架构与通信模式
MQTT采用客户端-服务器架构，基于发布/订阅（Publish/Subscribe）模式实现消息传递：
grap...
Get Character value from KeyCode in JavaScript… then trim
..., // [61]
"GREATER_THAN", // [62]
"QUESTION_MARK", // [63]
"AT", // [64]
"A", // [65]
"B", // [66]
"C", // [67]
"D", // [68]
"E", // [69]
"F", // [70]
"G", // [71]
"H", // [72]
"I", // [73]
"J", // [74]
"K", // [75]
"L", // [76]
"M", // [77]
"N", // [78]
"O", // [...
通过 ulimit 改善系统性能 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
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设置硬资源限制，一旦设置不能增加。
ulimit – Hs 64；限制硬资源，线程栈大小为 64K。
-S
设置软资源限制，设置后可以增加，但是不能超过硬资源设置。
ulimit – Sn 32；限制软资源，32 个文件描述符。
-a...
What characters are allowed in an email address?
... then you have to take IDN into account, which basically makes a character-based approach useless (sorry), unless you first convert the internationalized email addresses to Punycode.
After doing that you can follow (most of) the advice above.
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