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indexing - MySql - Self Join - Full Table Scan (Cannot Scan Index)

I have the following self-join query: SELECT A.id FROM mytbl AS A LEFT JOIN mytbl AS B ON (A.lft ... ) ENGINE=InnoDB DEFAULT CHARSET=utf8 Thanks See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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java - Read complete HTTP request-header

I'm currently creating a little webserver (for testing purposes) and I have a problem reading the HTTP request- ... would you go about this? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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html - Internal link in xslt does not work

I have some problem regarding following xslt file. TO TOP does not work very well. It work only on top of page but ... > </html> </xsl:template> See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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java - Cannot render .tmx map using OrthogonalTiledMapRenderer (Android)

I am having a hard time getting a map to display correctly on my android app using LibGdx. First up here is my ... t know. Thanks for the help! See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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Selecting only max value in python list of dicts

I have a list of dicts as follows: [{"server":"8.8.8.8", "domains":[{"google.com":[{"time":15, "serial":14}, ... :{"time":65, "serial":59}} ] }] See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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python - I got ModuleNotFoundError: No module named 'Cython' when trying to make Extension

I'm trying to run this code : from distutils.core import setup from distutils.extension import Extension from Cython ... .but error doesnot fix! See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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Trying to run a program in C

Can someone help me to run this program? I tried this: #include <stdio.h> #include <stdlib.h> #include <math.h> ... .741.790, total time: 17s) See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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php - Echoing out a field and a value from one row while running a query that ranks all rows

I have a MySQL query called $sqlStr5 that ranks rows by a metric called totalScore2. One of the fields that $sqlStr5 returns ... )).'</div>'; } See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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What variables do I have to compare in this java code?

I am making a card related application. Suits are ranked Clubs, Diamonds, Spades, Hearts I'd like to order them like this ... (deck[i]); } } } See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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python - From nested dict to DataFrame

I would like to convert nested dict to DataFrame object. I have a dictionary: { 'David X': { 'something1': ' ... 1,2,3}' and appropriate values. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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jmeter - How to loop each thread with unique data from CSV Data Config file

I have CSV data config file with 25 users. When I create a Thread group of 25 users I want each thread to pick ... picks User A ( iteration 2 ) See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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vb.net - object reference not set to an instance of an object Inserting database sql array

How can i insert array textbox in database?I have to save each newboxes in access and it should be in different ... End Try End Sub End Class See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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multiprocessing - Fastest way to extract tar files using Python

I have to extract hundreds of tar.bz files each with size of 5GB. So tried the following code: ... further ideas to accelerate extracting? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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how to add metadata to an image (with java code) and then convert it to dicom

I found a java code that converts a jpg and a Dicom(it takes the metadata fri?om that one) files to a ... attribs.writeTo(dcmo); dcmo.close(); See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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c# - How can I map JSON to a .NET class

I want to map this JSON into a .NET class. How can I map this JSON data into a class? Please suggest how. Here ... , "choiceAnswers": [123] } ]} See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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android - How to change EditText background color when I enter text?

My EditText has some color, but when I enter some text it should change. Say it's grey, I started to enter ... xml only, so make code changes. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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python - extract data at specific columns in a line if there is any data at them

I have a file with lines of data like below I need to pull out ... 0616170622170622170300000150003041 CF214L214L1671680999999900002000001905 See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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html - How to extract particular text from pdf using php

I need to store name of candidate and his id in mysql table , I have extracted the text using pdfparser <? ... seems unclear I will improve it. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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Why do I get less metadata when using Facebook Graph API with long-lived page-token?

I am trying to store posts from FB pages in an Elasticsearch cluster. I am using the Logstash plugin ' ... help appreciated. Thank you! See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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Setup pull requests with git flow and azure pipelines

I'm trying to setup a library project using DevOps. The branching strategy choosed is git-flow in order ... Any suggestions are welcome Thanks See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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glibc - "Illegal instruction" when run precompiled program on other machine

I have to build my program on CentOS 7 and deploy on other Linux machine. The program required newer version ... the problem was not fixed. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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c - Why evaluating sizeof in a loop isn't faster than using a fixed number for the size of the object?

When it comes to writing & reading data (variables and objects) from & to files, our teacher told us ... distinguishable pattern. What gives? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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java - How can I bind stage width and height in JavaFX?

I want to bind the stage width and height together, so the user can only resize it by keeping the aspect ration ... I solve this? Thanks, Tibor See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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r - plot xtable or save it as image

I want to use xtable layouts in my powerpoint presentations and I need a way to directly convert a data.frame ... or vector) or plot window. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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android - How to set the text view using the data model in hash map

I want to set the input value using edit text and get the values from that model and have to set the text in ... data.put(key, value); } } See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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Why is PHP not reading required file?

(I'm starting this question over from scratch. If you want to know what the original question was that MrMook ... when running test-forward.php? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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231 views

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php - radio button value for add

Can anyone say if this code is right or wrong? If(isset($_POST) && ($_POST[ GET_PAYMENT'] == 1')) { $totalAmount = ... + </span> ); } }); } See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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217 views

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c# - event attched to link button inside gridview is not working?

I have a grid in asp.net, inside the asp.net i am binding data as linkbutton when clicking on link ... .CommandArgument; TextBox1.Text=value; } See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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