Programmer Think

This article is based on years of experience in JavaScript coding technology and is suitable for all developers who are using JavaScript programming. The purpose of this article is to help you more skilled in using JavaScript language for development work. The article will be divided into two parts: the first part and the senior part, which wi ...

redis is a memory database, there must be more memory release, but memory release is a heavy operation, so it will be It affects the normal operation efficiency of redis. So redis lazily releases some memory. Spatial lazy release is the release of memory by hand Special threads perform release operations. There are three main types of space ...

view Display Flow of Custom view To display a view, it needs three processes: measurement, layout and drawing. This chapter discusses these three processes in detail. View's three major processes are more complex to analyze concretely. This article will not analyze in detail from the root causes, but it can ensure that it can reach a pract ...

Scene Restoration Sometimes in pages containing input boxes, clicking on input boxes will block part of the input boxes because the keyboard pops up, affecting the user experience. iOS does not deal with this problem by default, but we can achieve the effect of automatically uploading the keyboard pop-up input box by ourselves. Test Page Idea ...

In an App, pop-ups have always been a frequently used prompt control.It seems simple, but it has a lot of deep things to learn from. As we all know, how much importance Apple attaches to the user experience is reflected in how it handles pop-ups.I don't know if you've noticed the order in which pop-ups appear on newly installed Apps?Usually thi ...

Requirements: Statistics of the frequency of each character in poem.txt using HashMap require that punctuation (;,..) not be included.,.;), whitespace' ', carriage return'\r', line break'\n', tab character'\t', number 0~9 (greater than'0'less than'9'). (1) Use for statements to find out the frequency of occurrences of "spring", ...

Metronic Advanced Table It's a self-implemented table in the Metonic framework, with the bottom layer being Datatables This tutorial will mainly use Vue to implement the interactive part, Bootstrap to do style library, jQuery to do some user interaction (pop-up window). Used libraries: Vue 2.0, Bootstrap 3, jQuery 2, font-awesome 4, are availa ...

1,join() join() Method is used to convert all elements in an array into a string. Elements are delimited by a specified delimiter.arrayObject.join(separator)The parameter represents the separator and is optional. Default comma if no parameters are passed. Note that the return value is a string, not an array.Note: This method does not change the ...

Original: Cookie authentication in ASP.NET CORE Everyone must have used FormsAuthentication to authenticate the login user when using ASP.NET. The core of FormsAuthentication is Cookie, ASP.NET stores the user name in Cookie. Now is the era of ASP.NET CORE, but ASP.NET CORE does not have FormsAuthentication, so how do I authenticate?The answer ...

Label PostgreSQL, recursive queries, big screen broadcasts, the most congested gateways, the busiest shops, the most congested toilets in an area, data perspective, streaming, time series data background With the development of the Internet of Things, the generation of data is faster and faster.For example, data of car passing through roads ...