prefix | 易学教程

How to generate folder with Lazy Loading Prefix (+) using angular cli?

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问题 We began to rewrite our angular 2 app using mainly angular-cli to generate components etc. The Problem now is, in order to adhere to the Style Guide, major component folders, which later may be loaded lazily should be prefixed with a "+" . Using --help of the cli generate instruction I could see two options : --prefix --route. But setting these to true had no effect on the generated folder name. My question now is, what is the correct way to generate lazy loaded folders prefixed with a "+"

Add prefix failed with percentage

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问题 df = pd.DataFrame({'a':[1,4], 'b':[7,8]}) print (df) a b 0 1 7 1 4 8 I try add % to columns names, so use DataFrame.add_prefix print (df.add_prefix('%')) TypeError: not all arguments converted during string formatting What can be problem? How is possible use add_prefix function with % ? Or it is only bug? Notice : Possible solution is like: df.columns = ['%' + col for col in df.columns] print (df) %a %b 0 1 7 1 4 8 but I am interested about function add_prefix . 回答1: NOTE: This is likely to

Prolog Prefix Expression

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问题 I'm able to get the sum from the prefix expression but whenever I add a list within a list the program doesn't run. expr(Z) --> num(Z). expr(Z) --> [+], num(X), expr(Y), {Z is X+Y}. expr(Z) --> [-], num(X), expr(Y), {Z is X-Y}. num(D) --> [D], {number(D)}. calculate(L, M) :- expr(M, L, []). This works: calculate([+, 2, -, 9, 8], X] but calculate([+, 2, [-, 9, 8]], X] gives false. What do I need in order for it to work list inside of list? 回答1: very simple: ... expr(Z) --> [L], {calculate(L, Z

How to add prefix in front of xml element using attribute in c#

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问题 with the programming is this: As a result I want to have this: <rootprefix:rootname noPrefix="attribute with no prefix" firstprefix:attrOne="first atrribute" secondprefix:attrTwo="second atrribute with different prefix"> ...other elements... </rootprefix:rootname> The way to do this by coding is: NameTable nt = new NameTable(); nt.Add("key"); XmlNamespaceManager ns = new XmlNamespaceManager(nt); ns.AddNamespace("firstprefix", "fp"); ns.AddNamespace("secondprefix", "sp"); root.SetAttribute(

nginx 编译和添加模块

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1.普通模块安装通过nginx的help信息可以查看各个模块的添加信息，带有 without 的是默认编译，带有with 的需要在编译中添加。（1）with 模块添加 ./configure --prefix=/你的安装目录 --with-模块1 --with-模块2 简单的两个模块安装示例 ./configure --prefix=/usr/local/nginx \ --with-http_stub_status_module \ --with-http_ssl_module 然后执行编译 make ，最后执行安装 make install （2）without 模块添加带有 without 的模块是不需要编译的，如果要编译可以通过 without 的语句 ./configure --prefix=/你的安装目录 --without-模块示例： ./configure --prefix=/usr/local/nginx \ --with-http_stub_status_module \ --with-http_ssl_module \ --without-http_upstream_least_conn_module 2.第三方模块安装第三方模块需要下载到本地，然后通过 add-module 安装。 ./configure --prefix=/你的安装目录 -

Prefixing variables names to indicate their respective scope or origin?

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问题 In the companies I've been working, I've seen a lot the use of prefixes to indicate the scope or the origin of variables, for example m for classes members, i for methods intern variables and a (or p ) for methods parameters: public class User { private String mUserName; public String setUserName(final String aUserName) { final String iUserName = "Mr " + aUserName; mUserName = iUserName; } } What do you think about it? Is it recommended (or precisely not)? I found it quite ugly in a first

Sending sockets data with a leading length value

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问题 I want to send JSON messages from a PHP script to a C# app over a network connection using PHP Sockets. Usually, for binary protocols, the first 4 bytes of every message must be an integer which represents the length (how many bytes) of the message. In C# I prefix every message with an integer that tells the length of the message as follow: byte[] msgBytes = UTF8Encoding.UTF8.GetBytes("A JSON msg"); byte[] prefixBytes = BitConverter.GetBytes(msgBytes.Length); byte[] msgToSend = new byte

Django: Display form name in template with prefix

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问题 I have looked around for an answer for this for a while now with no success. I basically want to get the name of a form field with the prefix included. Does anyone know how to do this? Example: Let's say I create a form in views.py and include a prefix like this: myform = SomeForm(prefix="prefix") and then pass it to my template. If I then access a form field within the template directly I by {{ myform.username }} get something like this (notice that the prefix was included): <select id="id

Implementing a prefix notation expression parser using Irony

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问题 I'm trying to parse user-inputted prefix notation logical expressions using a context-free-grammar with the Irony library. This is for a class assignment so if anybody happens to be an expert on this, I would love to know more. I need to accept a user-inputted logical expression of the following format: and P Q -- (meaning P ^ Q) or P Q -- (meaning P v Q) not P -- (meaning ~P) imp P Q -- (meaning P -> Q) I'm attempting to parse these into expression trees using a context free grammar I'm

Do you know any opensource JQuery dropdown menu for telephone prefix?

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问题 I need to do a dropdown menu for entering telephone numbers. I want to do something similar as google does in his registration form. Something like this: Do you know any opensource dropdown menu for telephone prefix? I have looking in google and the most similar thing I have found is this menu. I can modify it to do what I want but it will take time and I think maybe someone has already did something similar. NOTE : The link I am sharing contains only countries and flags. I am looking for a