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Why are const parameters not allowed in C#?
It looks strange especially for C++ developers. In C++ we used to mark a parameter as const in order to be sure that its state will not be changed in the method. There are also other C++ specific reasons, like passing const ref in order to pass by ref and be sure that state will not be changed. ...
How do you cast a List of supertypes to a List of subtypes?
For example, lets say you have two classes:
17 Answers
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How do you UrlEncode without using System.Web?
I am trying to write a windows client application that calls a web site for data. To keep the install to a minimum I am trying only use dlls in the .NET Framework Client Profile . Trouble is that I need to UrlEncode some parameters, is there an easy way to do this without importing System.Web.dll w...
How to debug Ruby scripts [closed]
...definitely a life changer!).. Once installed and required in your program, setting a breakpoint is as easy as writing binding.pry. It also comes with colour completion, documentation lookup, and possibility to dynamically edit and reload a method..
– Andrea Fiore
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Java Timer vs ExecutorService?
I have code where I schedule a task using java.util.Timer . I was looking around and saw ExecutorService can do the same. So this question here, have you used Timer and ExecutorService to schedule tasks, what is the benefit of one using over another?
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WKWebView not loading local files under iOS 8
For previous iOS 8 betas, load a local web app (in Bundle) and it works fine for both UIWebView and WKWebView , and I even ported a web game using the new WKWebView API.
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App Inventor 2 低功耗蓝牙 BlueToothLE 拓展 · App Inventor 2 中文网
...给定的时间内未建立连接，则将中止尝试并触发 ConnectionFailed 事件。
DeviceCharacteristics – 已连接设备所广播的每个特征对应的三元组列表，包含服务UUID、特征UUID 和特征名称（如果有）。列表格式为 ((服务 1 特...
What’s the best way to check if a file exists in C++? (cross platform)
I have read the answers for What's the best way to check if a file exists in C? (cross platform) , but I'm wondering if there is a better way to do this using standard c++ libs? Preferably without trying to open the file at all.
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How do I safely pass objects, especially STL objects, to and from a DLL?
...work the way you expect.
STL issues
The C++ standard library has its own set of ABI issues. There is no guarantee that a given STL type is laid out the same way in memory, nor is there a guarantee that a given STL class has the same size from one implementation to another (in particular, debug bui...
Best way to read a large file into a byte array in C#?
I have a web server which will read large binary files (several megabytes) into byte arrays. The server could be reading several files at the same time (different page requests), so I am looking for the most optimized way for doing this without taxing the CPU too much. Is the code below good enough?...