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PostgreSQL distance between 2 points stored in table

I have four fields lat1,lng1,lat2,lng2 and I would like to calculate the distance in km between them (rounded to ... What do I have to change? See Question&Answers more detail:os...

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

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The Google Geocoding API Cant find place

I am trying to find Martyr's Cemetery in Tirana, Albania http://maps.googleapis.com/maps/api/geocode/json? ... to find the correct address. See Question&Answers more detail:os...

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

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javascript - expand collapse html field Firefox

How do I expand/collapse an html field in Firefox? I incorporated a few JavaScript examples from the web, but they ... show/hide divs and such. 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 - Specifying spaces between words

how could I use whitespaces in python that in the could I can specify how mach the space between the words print " ... without typing it as " " 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# - Disable Gridview row when button click event is fired

I have a Gridview in which suppose there are 4-5 rows and each row has its button. Now what I want is, ... " RowEditTemplateControlPropertyName="value" /> </cc1:Column>--%> &...

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

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jquery - Validation of the dynamic input field in laravel

I have a table where the row can be dynamically added and user able to submit the file for any row. I ... advice from you. Thanks in advance See Question&Answers more detail:os...

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

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Calculating skewness of a data distribution in SQL in Access without an additional subquery

I have a dataset in an Access database that, for simplicity's sake, looks like this: ID Group Employee Ticket ... I can do this calculation? See Question&Answers more detail:os...

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

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linux - For each on target of Makefile variable

I've makefile which looks like follows apps = app1 app2 app3 all: dir app1 app2 app3 zip cleanup Now I want to ... ', needed by foo'. Stop. 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 to use Automapper 5?

I am new to Automapper. With below links, I am trying to understand it in action. http://automapper. ... this different name property? 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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elasticsearch - Elastic Search multi-value field aggregation

My indexed documents have a schema: { ... 'authors': [{'first name': 'John', 'last name': 'Smith'}, {' ... with a list of values. Any 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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javascript - One index is dependent on another index in Java Script

I'm making a function for a moving window design self-paced reading experiment where a sentence is input and a ... s wrong here, any ideas? See Question&Answers more detail:os...

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

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547 views

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VB.NET - Check if URL is a directory or file

Is there a way, in VB.NET, to check if a URL is a directory? I've seen a lot of methods of ... file name contains a space or something. 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 - Default FirebaseApp is not initialized in this process ,Make sure to call FirebaseApp.initializeApp(Context) first

Though I have called my call FirebaseApp.initializeApp(Context) first in my MainActivity, here is the ... .com/THIYAGU22/DuesettlementDetails See Question&Answers more detail:os...

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

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jquery - ASP.NET MVC Intentional Ajax Failure

I am making an ajax call to my controller which is going to perform a long operation. The operation can ... returning? Just throw an exception? See Question&Answers more detail:os...

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

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575 views

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java - Circular Arrays in Queues

How is mod used to determine the beginning and end of a circular array in a queue? See Question&Answers more detail:os...

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

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447 views

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Angular – Dynamically load multiple instances of the same component by submitting a form to add a new instance of a component to the display

Problem I'm trying to dynamically load multiple instances of the same component, with a new component being ... specific requirements. 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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scala - Class Extends a Trait With/Without Parentheses

Looking at this code from Scala in Depth... scala> trait Foo { | def someMethod(): Int = 5 | } ... Main()? How about without parentheses? See Question&Answers more detail:os...

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

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Does Winsock support IPv6 extension headers?

Is it possible to look at (and modify) IPv6 extension headers with Winsock using C/ C++? What API's allow us to do that? See Question&Answers more detail:os...

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

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517 views

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c++ - Internal connection management in libcurl and DNS ttl

libcurl caches connections and reuses them for consecutive requests. Suppose I have 4 connections in progress to ... use curl mutli interface. See Question&Answers more detail:os...

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

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883 views

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c# - SetDeviceGammaRamp just blinks the screen

I was trying to make an eye saver program myself in c# that is supposed to darken the screen after some time ... it to the previous 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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462 views

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python - Find rows in a DataFrame that partially match conditions

Given a DataFrame, whats the best way to find rows in the DataFrame that partially match a list of given values. ... /9/2009 | 19499 | 0 See Question&Answers more detail:os...

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

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533 views

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jquery - Dynamic Bootstrap Table/Form using JSON

I'm using the following code to generate a dynamic form inside of a table (Requirement is to use bootstrap tables ... the AJAX success - Why? See Question&Answers more detail:os...

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

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566 views

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elasticsearch - How many shards per node?

How can I get information how many shards exists per node with specific id? I trying to find this information ... thought please share with me. See Question&Answers more detail:os...

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

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601 views

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Controlling camera in Forge viewer

I'm trying to control the camera in the Autodesk Forge Viewer. Setting target and position seems to work ... _viewer.applyCamera(cam,false); See Question&Answers more detail:os...

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

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sas - Randoming symbols from a-Z

I need to generate a string from random characters in range of a-Z. How can i do it? Atm, i can ... with charecters. But that sounds awful. See Question&Answers more detail:os...

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

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527 views

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regex - Why does my Perl one-liner report "Bareword found where operator expected"?

I want to convert block size into MB. I am using the /e option in my substitution. When I add starting MB ... . Any help fixing the second one? See Question&Answers more detail:os...

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

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473 views

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eclipse - How to open html file in editor using ADT Bundle for phonegap Apps

I had download and install ADT Bundle but the issue when i access the phonegap app workspace and try to open ... editor... Thanks in Advance. See Question&Answers more detail:os...

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

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605 views

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Convert javascript to json?

I'm working with leaflets and I've noticed that many examples use a separate js file where a variable is set ... using L.geoJson, if possible. See Question&Answers more detail:os...

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

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