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Signed to unsigned conversion in C - is it always safe?
Suppose I have the following C code.
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Changing MongoDB data store directory
Until now I have not been specifying a MongoDB data directory and have had only one 30 GB primary partition.
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Is there a function to make a copy of a PHP array to another?
Is there a function to make a copy of a PHP array to another?
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Is there a __CLASS__ macro in C++?
Is there a __CLASS__ macro in C++ which gives the class name similar to __FUNCTION__ macro which gives the function name
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Python List vs. Array - when to use?
If you are creating a 1d array, you can implement it as a List, or else use the 'array' module in the standard library. I have always used Lists for 1d arrays.
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C++ templates that accept only certain types
In Java you can define generic class that accept only types that extends class of your choice, eg:
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Is it possible to modify variable in python that is in outer, but not global, scope?
Given following code:
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Remove all classes that begin with a certain string
I have a div with id="a" that may have any number of classes attached to it, from several groups. Each group has a specific prefix. In the javascript, I don't know which class from the group is on the div. I want to be able to clear all classes with a given prefix and then add a new one. If I want...
一文讲透区块链技术原理 - 资讯 - 清泛网 - 专注C/C++及内核技术
...据库技术，它基于密码学中的椭圆曲线数字签名算法（ECDSA）来实现去中心化的P2P系统设计。但区块链的作用不仅仅局限在比特币上。现在，人们在使用“区块链”这个词时，有的时候是指数据结构，有时是指数据库，有时则是...
How do you use vim's quickfix feature?
I'm a pretty new Vim user and I've found that its learning curve is quite steep (at least for me). I just installed this vim script for JavaScriptLint error checking, which shows errors in vim's quickfix window once I save a buffer.
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