F主题的文章列表，还有F的技术要点_第1471页

hdu4597 Play Game（DFS）

题目链接：http://acm.hdu.edu.cn/showproblem.php?pid=4597 Alice和Bob玩一个游戏，有两个长度为N的正整数数字序列，每次他们两个仅仅能从当中一个序列，选择两端中的一个拿走。他们都希望能够拿到尽量大的数...

IT猿 ·2020-03-27

UVA 1619 Feel Good（DP)

Billisdevelopinganewmathematicaltheoryforhumanemotions.Hisrecentinvestigationsarededicatedtostudyinghowgoodorbaddaysinfluentpeople'smemoriesaboutsomeperiodoflif...

IT猿 ·2020-03-27

Codeforces Round #262 (Div. 2) 460C. Present（二分）

题目链接：http://codeforces.com/problemset/problem/460/CC.Presenttimelimitpertest2secondsmemorylimitpertest256megabytesinputstandardinputoutputstandardoutputLittlebe...

IT猿 ·2020-03-27

【python基础】字符串格式化(% VS format)

字符串格式化Python的字符串格式化有两种方式: 百分号方式、format方式百分号的方式相对来说比较老，而format方式则是比较先进的方式，企图替换古老的方式，目前两者并存。1、百分号方式%[(name)][flags][width].[precision]typecode(name) &nb...

IT猿 ·2020-03-27

ROI(Range Of Interest)与泛洪填充

python+opencv3.3视频教学基础入门笔记（贾志刚老师）https://www.bilibili.com/video/av24998616/?p=8numpy获取ROI指定宽高的起始结束位置src1=cv.imread('1.jpg')#cv.namedWindow('src1',cv.WINDOW_AUTO...

IT猿 ·2020-03-27

PyQt5学习笔记----标准文件打开保存框QFileDialog

单个文件打开QFileDialog.getOpenFileName()多个文件打开QFileDialog.getOpenFileNames()文件夹选取 QFileDialog.getExistingDirectory()文件保存 QFileDialo...

IT猿 ·2020-03-27

JavaScript 特效之四大家族（offset/scroll/client/event）

三大系列：offset、scroll、client事件对象：event（事件被触动时，鼠标和键盘的状态）（通过属性控制）三大系列都是以DOM元素节点的属性形式存在的。类比访问关系，也是以属性形式存在。不同点在于，访问关系是为了获取其他节点，而三大系列是为了获取元素节点更多的信息。 &n...

IT猿 ·2020-03-27

An Autofac Lifetime Primer

https://nblumhardt.com/2011/01/an-autofac-lifetime-primer/Or,“AvoidingMemoryLeaksinManagedComposition”Understandinglifetimecanbeprettytoughwhenyou&r...

IT猿 ·2020-03-27

Controlling Scope and Lifetime

https://autofaccn.readthedocs.io/en/latest/lifetime/index.htmlAgreatplacetostartlearningaboutAutofacscopeandlifetimeisinNickBlumhardt’sAutofaclifetimeprim...

IT猿 ·2020-03-27

Git does not apply deleted files when merging an old branch into the master. How can I tell Git to apply deleted files?

TheonlywayIcanfathomthispossiblesituationisifyoucreatedtwodifferentfiles,eachwiththesamefilename,inindependentbranches. 我遇到的情况的是Branch5和Branch6基于同一个commit出...

IT猿 ·2020-03-27

How to get the parents of a merge commit in git?

gitrev-list--parents-n1uk-645ec1aaab4714f7b47136e1e43744a70fc11a9f0 【theidofcurrentcommit】f49cddd09d099ed3a04fe608c2b4fc3e159fbb47025a7525fabb4...

IT猿 ·2020-03-27

What is the difference between Clustered and Non-Clustered Indexes in SQL Server?

Fromthediscussionwefindfollowingdifferencesbetweenclusteredandnon-clusteredindexes.Therecanbeonlyoneclusteredindexpertable.However,youcancreatemultiplenon-clust...

IT猿 ·2020-03-27

This request has been blocked because sensitive information could be disclosed to third party web sites when this is used in a GET request.

2020-03-1611:04:35,168ERROR[13]:System.InvalidOperationException:Thisrequesthasbeenblockedbecausesensitiveinformationcouldbedisclosedtothirdpartywebsiteswhenthi...

IT猿 ·2020-03-27

What is the difference between Shrink Database and File?

Simply...DBCCShrinkDatabase():shrinkallfilesDBCCShrinkFile():justonefileForexample,youmayhavealogbackupissueandit'sgrownoutofcontrolsoyourunDBCCShrinkFile().You...

IT猿 ·2020-03-27

The view 'Index' or its master was not found.

Global.asaxfilecontaintheURLRoute.DefaultURLroutelikethis."{controller}/{action}/{id}"So,Trythis.1.Rightclickyourcontrollermethodasbelow.Example:letsaywecallInd...

IT猿 ·2020-03-27