How to use Java property files?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Ihavealistofkey/valuepairsofconfigurationvaluesIwanttostoreasJavapropertyfiles,andlaterloadanditeratethrough. Questions: DoIneedtostorethefile...
Best way to test if a row exists in a MySQL table
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: I\'mtryingtofindoutifarowexistsinatable.UsingMySQL,isitbettertodoaquerylikethis: SELECTCOUNT(*)AStotalFROMtable1WHERE... andchecktoseeifthetot...
Most efficient way to create a zero filled JavaScr
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: WhatisthemostefficientwaytocreateanarbitrarylengthzerofilledarrayinJavaScript? 回答1: ES6introducesArray.prototype.fill.Itcanbeusedlikethis: newA...
When to favor ng-if vs. ng-show/ng-hide?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Iunderstandthatng-showandng-hideaffecttheclasssetonanelementandthatng-ifcontrolswhetheranelementisrenderedaspartoftheDOM. Arethereguidelinesonch...
Does ruby have real multithreading?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Iknowaboutthe\cooperative\threadingofrubyusinggreenthreads.HowcanIcreatereal\OS-level\threadsinmyapplicationinordertomakeuseofmultiplecpucoresfor...