inline | 易学教程

Container inline-block once again

阅读更多关于 Container inline-block once again

问题 Look at this I would like to make a main container that has 2 sub containers - left and right (each 50% of the screen width). Left must contain a photo. The right one must contain the text (h2 and p directly below). The text should be halfway up the image. I need it to describe the products in the store. I was trying this div { border: 1px solid #CCC; } <div style="display: inline">a</div> <div style="display: inline">b</div> <div style="display: inline">c</div> but in this case I could not

Stimulate code-inlining

阅读更多关于 Stimulate code-inlining

问题 Unlike in languages like C++, where you can explicitly state inline , in Go the compiler dynamically detects functions that are candidate for inlining (which C++ can do too, but Go can't do both). Also there's a debug option to see possible inlining happening, yet there is very few documented online about the exact logic of the go compiler(s) doing this. Let's say I need to rerun some big loop over a set of data every n-period; func Encrypt(password []byte) ([]byte, error) { return bcrypt

Type of addition (+) in F#

阅读更多关于 Type of addition (+) in F#

问题 I just learned that OCAML have to have a . postfix for doing float arithmetic. An example would be 3. +. 4. which equals 7. (float). However, F# handles float and integer arithmetic in the same way, so both 3 + 4 (int) and 3. + 4. (float) works. F# have + naturally assigned to int so let add a b = a + b is of type int -> int -> int . And indeed (+) gives me val it : (int -> int -> int) = <fun:it@6-1> . That leads to the following sequence which I think quite counter-intuitive: > 3. + 4.;; val

点分治

阅读更多关于点分治

点分治是个好东西学长说今年省选day2 T3 有40分可以是点分治有点难受如果我当初学了点分治该有多好啊。所谓点分治就是在树上搞一些分治操作让复杂度大大降低。这道题询问树上是否有任意两点之间的距离为k 考虑暴力 m指询问数暴力枚举加dfs跑距离所以复杂度是mn^3 期望得分 30 由于是一棵无根树所以考虑以1位根节点提前预处理出树上任意点距根的距离。然后暴力枚举两个端点求出LCA 然后 d[x]+d[y]-(d[LCA]<<1)判断即可。复杂度 mn^2logn期望得分60 很不错了~ 正解释点分治：其实点分治是一种另类的分治方法基于树上的分治。先处理过根的边然后分治处理根的子树这样递归处理考虑每次选根都是树的重心处。所以总递归层数为logn 在每一层中暴力判断和过根的边的联系的边然后进行判断复杂度O(n) 总复杂度mnlogn 期望得分：100；这样巧妙的利用了分治思想和不断的选择重心使复杂度骤降。因为一些小细节打挂了所以浪费了点时间来检查。首先是对于树的重心的处理然后是分治点然后在每个点中进行答案的统计即可。复杂度mnlogn 可以AC。 //#include<bits/stdc++.h> #include<iostream> #include<cstdio> #include<iomanip> #include<cstring>

When should I (and should I not) use Scala's @inline annotation?

阅读更多关于 When should I (and should I not) use Scala's @inline annotation?

问题 I believe I understand the basics of inline functions: instead of a function call resulting in parameters being placed on the stack and an invoke operation occurring, the definition of the function is copied at compile time to where the invocation was made, saving the invocation overhead at runtime. So I want to know: Does scalac use smarts to inline some functions (e.g. private def) without the hints from annotations? How do I judge when it be a good idea to hint to scalac that it inlines a

RVO force compilation error on failure

阅读更多关于 RVO force compilation error on failure

问题 Lots of discussions here about when RVO can be done but not much about when it is actually done. As stated may times, RVO can not be guaranteed according to the Standard but is there a way to guarantee that either RVO optimization succeeds or the corresponding code fails to compile? So far I partially succeeded to make the code issue link errors when RVO fails. For this I declare the copy constructors without defining them. Obviously this is neither robust nor feasible in the non rare cases

CSS Display inline-block issue with IE

阅读更多关于 CSS Display inline-block issue with IE

问题 I’ve faced with an issue with IE6 & IE7 issue and I was hoping someone had a solution for me other than to not use IE6/7. The cost on the right needs to be on the same line as the label on the left. I'm only able to get to this to work in FireFox, but in IE7, for example, it places cost on the line below even though I'm using inline-block. An yhelp would be greatly appreciated Note: I turned on borders so I could see what's happening... Demo of my issue: http://jsbin.com/ilese4/ Here's a

CSS Display inline-block issue with IE

阅读更多关于 CSS Display inline-block issue with IE

Is “inline” implicit in C++ member functions defined in class definition

阅读更多关于 Is “inline” implicit in C++ member functions defined in class definition

问题 According to the C++ specification, are the following two classes equivalently defined? class A { void f() { } }; class B { inline void f() { } }; i.e., is putting the "inline" qualifier on such member function defined in the class definition completely redundant? Followon question: Assuming it is redundant, for code style, would it be sensible to keep the "inline" tag, so a future developer realises that function should be inlined, and does not remove the definition somewhere else and remove

Does GCC inline C++ functions without the 'inline' keyword?

阅读更多关于 Does GCC inline C++ functions without the 'inline' keyword?

问题 Does GCC, when compiling C++ code, ever try to optimize for speed by choosing to inline functions that are not marked with the inline keyword? 回答1: Yes. Any compiler is free to inline any function whenever it thinks it is a good idea. GCC does that as well. At -O2 optimization level the inlining is done when the compiler thinks it is worth doing (a heuristic is used) and if it will not increase the size of the code. At -O3 it is done whenever the compiler thinks it is worth doing, regardless