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python - Pandas join issue: columns overlap but no suffix specified

I have following 2 data frames: df_a = mukey DI PI 0 100000 35 14 1 1000005 44 14 2 1000006 44 14 ... dataframes do have common 'mukey' values. 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 - Submit jQuery UI dialog on <Enter>

I have a jQuery UI dialog box with a form. I would like to simulate a click on one of the dialog's ... was a simpler/cleaner way. Thanks. See Question&Answers more detail:os...

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

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540 views

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ios - Swift: How to get substring from start to last index of character

I want to learn the best/simplest way to turn a string into another string but with only a subset, starting ... to handle substrings in Swift. 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 - Format certain floating dataframe columns into percentage in pandas

I am trying to write a paper in IPython notebook, but encountered some issues with display format. Say I have following ... . -0.0057=-0.57%. 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: difference between a statement and an expression?

I asked this question earlier, and after thinking about the topic some more, I began to wonder where the seemingly ... vice versa? if(_X_) _Y_ 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 - Alert for unsaved changes in form

I want to write Jquery code in master file, so that if there if user changes page and there is any unsaved ... that change() is not working? 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 does NSError need double indirection? (pointer to a pointer)

This concept seems to trouble me. Why does an NSError object need its pointer passed to a method that is modifying ... error:(NSError **)error? 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 nicely annotate a ggplot2 (manual)

Using ggplot2 I normally use geom_text and something like position=jitter to annotate my plots. However - for a nice ... there is a better way? See Question&Answers more detail:os...

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

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cd - Change directory command in Docker?

In docker I want to do this: git clone XYZ cd XYZ make XYZ However because there is no cd command, I have ... ). Any good solutions for 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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objective c - When do I need to call setNeedsDisplay in iOS?

When creating an iOS app, I'm confused as to when exactly I need to call setNeedsDisplay? I know that it ... regarding when to use this method? 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 - How to deploy a React App on Apache web server

I have created a basic React App from https://www.tutorialspoint.com/reactjs/reactjs_jsx.htm here , I want ... anything more than few guidelines See Question&Answers more detail:os...

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

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multithreading - When is a condition variable needed, isn't a mutex enough?

I'm sure mutex isn't enough that's the reason the concept of condition variables exist; but it beats ... seeing condition variable's purpose. 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 - hardcoded string "row three", should use @string resource

I'm a beginner android developer , I was trying to run this Linear Layout in eclipse : <?xml version="1 ... rest of the warnings.Any suggestion? 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 implement ASP.NET Identity to an empty MVC project

I create a new empty MVC project and I want to add identity to it. Now I do not know how to do this ... in my own database how to manage users See Question&Answers more detail:os...

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

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jquery - How do you change the default widget for all Django date fields in a ModelForm?

Given a set of typical models: # Application A from django.db import models class TypicalModelA(models.Model): ... and input is appreciated. 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 - How to use events in yii2?

I've been through the documentation and all the articles on Yii2 events found using Google. Can someone provide ... where it may seem logical? 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 - RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility

I have this error for trying to load a saved SVM model. I have tried uninstalling sklearn, NumPy and SciPy, ... occurred in the first place... 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 - How to create a DataFrame of random integers with Pandas?

I know that if I use randn, import pandas as pd import numpy as np df = pd.DataFrame(np.random. ... with random integers between some range? 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 is auto_ptr being deprecated?

I heard auto_ptr is being deprecated in C++11. What is the reason for this? Also I would like ... difference between auto_ptr and shared_ptr. 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 - XAMPP: Couldn't start Apache (Windows 10)

I'm using XAMPP, and I can start Apache, but, MySQL (phpMyAdmin) start! When I start, I get this error; ... don't exists! Skype is uninstalled. See Question&Answers more detail:os...

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

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602 views

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linux - Using grep and sed to find and replace a string

I am using the following to search a directory recursively for specific string and replace it with another: grep ... unix commands like these). See Question&Answers more detail:os...

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

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538 views

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indexing - MySQL 5.0 indexes - Unique vs Non Unique

What is the difference between MySQL unique and non-unique index in terms of performance? Let us say I want ... primary key and unique index? 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# - Xamarin iOS memory leaks everywhere

We've been using Xamarin iOS for the last 8 months and developed a non-trivial enterprise app with many ... for DisposeEx method and solution. See Question&Answers more detail:os...

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

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257 views

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java - Can anyone explain servlet mapping?

I'm trying to write a web application using SpringMVC. Normally I'd just map some made-up file extension to ... > Can anyone shed some light? See Question&Answers more detail:os...

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

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mongodb schema design for blogs

How would you design the schema for a blog-like site with document-based databases (mongodb). The site has the ... "user_id", "comment_id", } See Question&Answers more detail:os...

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

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845 views

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Why does git stash pop say that it could not restore untracked files from stash entry?

I had a bunch of staged and unstaged changes and I wanted to quickly switch to another branch and then switch back. ... do I avoid it next time? See Question&Answers more detail:os...

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

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626 views

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javascript - How to call multiple functions with @click in vue?

Question: How to call multiple functions in a single @click? (aka v-on:click)? I tried Split functions with a ... But sometimes this isn't nice. See Question&Answers more detail:os...

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

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836 views

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web hosting - Unable to negotiate with XX.XXX.XX.XX: no matching host key type found. Their offer: ssh-dss

I am trying to create a git repository on my web host and clone it on my computer. Here's what I did ... repository exists. What does that mean? See Question&Answers more detail:os...

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

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