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python - How to drop duplicates based on two or more subsets criteria in Pandas data-frame

Lets say this is my data-frame df = pd.DataFrame({ 'bio' : ['1', '1', '1', '4'], 'center' : ... df a bit to fit example by correct answer 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 - Repeat each item in a list a number of times specified in another list

I have two lists, x and y: >>> x = [2, 3, 4] >>> y = [1, 2, 3] I want to use ... fastest, most efficient, most Pythonic way to achieve 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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thread safety - Fortran OpenMP with subroutines and functions

Disclaimer: I'm quite certain that this has been answered somewhere, but myself and another person have been ... for their local variables. 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 - Add multiple values to one numpy array index

Simple Version: if I do this: import numpy as np a = np.zeros(2) a[[1, 1]] += np.array([1, 1]) ... just fine, as noted in the simple 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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Is it possible to select and upload multiple files at one time in Internet Explorer?

I'm writing a form to select and upload multiple files at one time. This seems to be a pretty straight ... and uploading files. Thanks, Russell See Question&Answers more detail:os...

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

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send email with attachment using php

I used this code to send email with attachment using php, but there is something error in the attachment since I ... $send; } ?> please help. 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++ - How to serialize boost::dynamic_bitset?

How to serialize a class with a boost::dynamic_bitset member? #include <boost/archive/text_oarchive.hpp> #include ... member named serialize' 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 - Firebase cloud messaging rest API spring

I have to make a Rest API in Spring Java for a multi tier arch in which DAO, Controller, Service manager needs ... to devices. How could I? 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 - Why do numbers in a string become "x0n" when a backslash precedes them?

I was doing a few experiments with escape backslashes in the Python 3.4 shell and noticed something quite strange. >> ... what is it used for? 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 do I remove 'index.php' from URL in CodeIgniter?

How do I remove index.php from my URL in CodeIgniter? I removed index.php from my configuration file, and I ... found. What is the 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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python - Send http request through specific network interface

I have two network interfaces (wifi and ethernet) both with internet access. Let's say my interfaces are eth (ethernet ... and it doesn't work. 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 create an Android Activity and Service that use separate processes

I have an Android app that consists of an activity and a service. Currently they both exist in the same ... application. Is this 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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java - Chrome 59 and Basic Authentication with Selenium/Fluentlenium

Chrome 59 has removed support for https://user:[email protected] URLs. I have a test which was using ... Is there any alternative approach? See Question&Answers more detail:os...

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

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iphone - Accessing & Using the MobileWiFi.framework

For a personal project of mine, I'm trying to retrieve iPhone WiFi signal strength. I'm fully aware that this ... (because MobileWifi is in C)? See Question&Answers more detail:os...

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

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asp.net - How to fix error ::Format of the initialization string does not conform to specification starting at index 0::

I uploaded my site on godaddy shared host. I can access this database from my management studio. I can't access ... .Data Source=(local);... 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 - Why is calling a function (such as strlen, count etc) on a referenced value so slow?

I've just found something very strange in PHP. If I pass in a variable to a function by reference, and then ... functions. What's going on? 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 - Extract a string between double quotes

I'm reading a response from a source which is an journal or an essay and I have the html response as a string ... my regex here? Thanks a lot. See Question&Answers more detail:os...

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

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378 views

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rdd - Why does sortBy transformation trigger a Spark job?

As per Spark documentation only RDD actions can trigger a Spark job and the transformations are lazily evaluated when ... in the SparkUI. Why? See Question&Answers more detail:os...

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

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605 views

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windows - How to kill a process in Java, given a specific PID

How do I kill a specific process from Java code on Windows, if I have the specific PID. See Question&Answers more detail:os...

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

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Cases where 'this' is the global Object in Javascript

I'm playing around with different ways to call a function that is an attribute of an Object in Javascript and ... ' to be the Global Object See Question&Answers more detail:os...

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

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374 views

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python - Add legends to LineCollection plot

This is a derivative question related to the answer given in Set line colors according to colormap where a great ... .autoscale() plt.show() 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 $aggregate $push multiple fields in Java Spring Data

I have a mongo aggregate group query: db.wizard.aggregate( { $group: { _id: "$title", versions: { $push ... possible with Spring-Data-MongoDB? See Question&Answers more detail:os...

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

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templates - WPF: How to customize SelectionBoxItem in ComboBox

I want to display a custom template/item as selected item in ComboBox (this item does not actually ... ComboBox uses unnamed ContentPresenter. 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 - List for Multiple Plots from Loop (ggplot2) - List elements being overwritten

(Very much a novice, so please excuse any confusion/obvious mistakes) Goal: A loop that allows me to ... having each previous plot overwritten? See Question&Answers more detail:os...

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

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css - HTML Div border not showing

I'm trying to add a border to a div element in HTML. Below is my code. #container-border { border-width: 2px; ... "container-border"> ... </div> See Question&Answers more detail:os...

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

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473 views

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c# - How do I disable some dates on a DateTimePicker control?

I was wondering is it possible to disable selected dates in a DateTimePicker, so that user cannot select them. i ... .how can i achieve 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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351 views

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c++ - Static constexpr odr-used or not?

How come that the following works on gcc but doesn't on clang, (see it live): constexpr int giveMeValue() { return ... it is, is it odr-used? See Question&Answers more detail:os...

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

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401 views

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Use dll files in android Application

Can I use dll files (commonly used in windows Application) in Android application? See Question&Answers more detail:os...

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

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