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What is the best algorithm for overriding GetHashCode?

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Using scanf() in C++ programs is faster than using cin?

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How can I record a Video in my Android App.?

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How do I open the SearchView programmatically?

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How to get the full path of running process?

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How to crop an image using C#?

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浮点数在内存中的表示 - C/C++ - 清泛网 - 专注IT技能提升

...,是简单的 f == 0 吗?当然不是,正确的写法应该是f > -1e-7 && f < 1e-7,为什么呢? 浮点型,由于精度关系(float精度:2^23 = 8388608,一共7位,同理double 16位),最小分辨0.0000001, 当存储一个数时,只有7位是准确的,比如存储0,...
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Discuz 证件类型下拉框不显示的解决方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...; INSERT INTO `pre_common_member_profile_setting` VALUES ('idcardtype', 1, 1, 0, '证件类型', '身份证 护照 驾驶证等', 0, 0, 0, 0, 0, 0, 0, 'select', 0, '身份证\n护照\n驾驶证', ''); 执行后更新缓存再看前台页面,证件那类型下拉框是不是出来了?是不...
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浮点数在内存中的表示 - C/C++ - 清泛网 - 专注IT技能提升

...,是简单的 f == 0 吗?当然不是,正确的写法应该是f > -1e-7 && f < 1e-7,为什么呢? 浮点型,由于精度关系(float精度:2^23 = 8388608,一共7位,同理double 16位),最小分辨0.0000001, 当存储一个数时,只有7位是准确的,比如存储0,...
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浮点数在内存中的表示 - C/C++ - 清泛网移动版 - 专注IT技能提升

...,是简单的 f == 0 吗?当然不是,正确的写法应该是f > -1e-7 && f < 1e-7,为什么呢? 浮点型,由于精度关系(float精度:2^23 = 8388608,一共7位,同理double 16位),最小分辨0.0000001, 当存储一个数时,只有7位是准确的,比如存储0,...