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r - meaning of ddply error: 'names' attribute [9] must be the same length as the vector [1]

I'm going through Machine Learning for Hackers, and I am stuck at this line: from.weight <- ddply(priority.train, ... <- tmp > rm(tmp) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Using assignment as a condition expression?

Consider: if (a=5) { /* do something */ } How does the assignment work as a condition? Is it based on non-zero value of l-value? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - WinForms RadioButtonList doesn't exist?

I know that WebForms has a RadioButtonList control, but I can't find one for WinForms. What I need is to ... it really not exist in WinForms? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - GMAIL API for sending Email with attachment

i' m working on a javascript client able to read a CSV which contains an image url list. I m able to read ... ? Can you send me some example? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How can I integrate socket.io on Karate

I know that karate has a built-in support for WebSocket, but there is anyway that can use socket.io on ... that the message is as expected. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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include - C circular dependency

I have this problem with circular dependency in C, I looked around the other questions about this topic ... this circular dependency problem? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Identity UI no longer works after switching to .net core 3 endpoint routing

After having a hard time getting my area to show with endpoint routing i managed to fix it in this self answered thread ... (roleName)); } } } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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html - How to scrape dynamic webpages by Python

[What I'm trying to do] Scrape the webpage below for used car data. http://www.goo-net.com/php/ ... guidance would be appreciated. Thank you. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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r - How to use data.table within functions and loops?

While assessing the utility of data.table (vs. dplyr), a critical factor is the ability to use it within ... used within functions and loops?. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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swift - How we can get and read size of a Text with GeometryReader in SwiftUI?

I am trying to read the width of my Text depending on size of Text Font, As we know GeometryReader takes all ... .gray) .cornerRadius(20) } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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WebDriverException: Service U:/Scraping/chromedriver.exe unexpectedly exited. Status code was: 1 while working with Chrome and Python

I've been trying to get the webdriver to work with Python in Chrome at work, but can't for the life ... unexpectedly exited. Status code was: 1 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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PHP Linkify Links In Content

I've been working on a little project, and I find myself in a position where I need a php function which can ... Any idea of how to do this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Cross Domain Ajax Request with JQuery/PHP

Help, if you can- The situation: http://foobar.com includes a remotely hosted javacript file (http://boobar.com ... be able to accomplish this. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Why statements cannot appear at namespace scope?

Any idea on which rule in standard states the statements like this: p++; //where 'p' is pointer to ... not just an explanation if possible. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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android - Find the physical address of exception vector table from kernel module

I have an android device - Samsung galaxy s2 with kernel version 2.6.35.14 (arm cortex a9) I tried to find ... in some special way? thank you!! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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time - A puzzle related to nested loops

For a given input N, how many times does the enclosed statement executes? for i in 1 N loop for j in ... do this in general. Please explain. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Will the jit optimize new objects

I created this class for being immutable and having a fluent API: public final class Message { public final String ... of the "new String". See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Is it possible to modify the colModel after data has loaded with jqgrid?

I've got a jqGrid where I need to change the model after the data is loaded, but before it's parsed into ... . loadonce = true, datatype = json See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How to execute the dex file in android with command?

Can any body please share the method to execute the dex file in android with command? This is just to understand. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reflection - Dynamically find the class that represents a primitive Java type

I need to make some reflective method calls in Java. Those calls will include methods that have arguments that ... work with my requirements. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Generate permutations of JavaScript array

I have an array of n different elements in javascript, I know there are n! possible ways to order these elements. ... math level isn't the best. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to escape reserved words in Hibernate's HQL

I use the following query to get a java.util.Map with indexes id, text and object: Query q = mySession.createQuery ... AS `object` FROM User u] See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - ValueError: view limit minimum -35738.3640567 is less than 1 and is an invalid Matplotlib date value

im a beginner in matplotlib. Im trying to plot a dataframe using matplotlib.pyplot. The problem is that everytime ... can I plot this dataframe? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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spring boot - Jersey returns 404 with any error status code?

I have this useless endpoint in path "/test": @PUT public Response doSomething() { return Response.status(409). ... passes. What is happening? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql - Split given string and prepare case statement

Table: table_name create table table_name ( given_dates timestamp, set_name varchar ); Insertion of records: insert ... Microsoft SQL Server. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Exception in thread "main" java.lang.IllegalStateException: The driver executable does not exist while running Selenium Test on Ubuntu

I have tried this code in eclipse : import org.openqa.selenium.WebDriver; import org.openqa.selenium.firefox ... geckodriver location in ubuntu? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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706 views

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Upload artifacts to Nexus, without Maven

I have a non-Java project that produces a versioned build artifact, and I want to upload this to a Nexus ... , or even a Python script. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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R - argument is of length zero in if statement

I am having a little problem with R and I am not sure why. It is telling me that this line: if(temp > data[[k ... "4347" [1] "4559" Thanks - Sam See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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