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python - matplotlib colorbar for scatter

I'm working with data that has the data has 3 plotting parameters: x,y,c. How do you create a ... result is TypeError: You must first set_array for mappable Question&Answers:os...

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

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parsing - How to convert comma-delimited string to list in Python?

Given a string that is a sequence of several values separated by a commma: mStr = 'A,B,C,D,E' How do I convert the string to a ... = ['A', 'B', 'C', 'D', 'E'] Question&Answers:os...

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

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Constructor overloading in Java - best practice

There are a few topics similar to this, but I couldn't find one with a sufficient answer. I would like ... base class has overloaded constructors). Thanks :) Question&Answers:os...

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

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c# - How do you get total amount of RAM the computer has?

Using C#, I want to get the total amount of RAM that my computer has. With the PerformanceCounter I can get the ... the References, but I don't see it there. Question&Answers:os...

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

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c# - Notify ObservableCollection when Item changes

I found on this link ObservableCollection not noticing when Item in it changes (even with INotifyPropertyChanged) ... but never in MyItemsSource Property code. Question&Answers:os...

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

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Using the Android RecognizerIntent with a bluetooth headset

I use the following code to launch speech recognition in Android: PackageManager pm = getPackageManager(); ... using setBluetoothScoOn() or startBluetoothSco()? Question&Answers:os...

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

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Named capturing groups in JavaScript regex?

As far as I know there is no such thing as named capturing groups in JavaScript. What is the alternative way to get similar functionality? Question&Answers:os...

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

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django - log all sql queries

How can I log all SQL queries that my django application performed? I want to log everything, including SQLs from ... .log) where all SQL statements are logged? Question&Answers:os...

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

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three.js - How to change the zOrder of object with Threejs?

I made a scene using the webgl renderer where I put multiple 3D objects that I can select and move. However when ... t get any result. Thank you for your help. Question&Answers:os...

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

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Sorting a php array of arrays by custom order

I have an array of arrays: Array ( [0] => Array ( [id] = 7867867, [title] = 'Some Title'), [1] ... based (i.e. valueA < valueB). Help is appreciated. Question&Answers:os...

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

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jquery - How to style "input file" with CSS3 / Javascript?

This question already has answers here: Question&Answers:os...

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

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regex - How to split but ignore separators in quoted strings, in python?

I need to split a string like this, on semicolons. But I don't want to split on semicolons that are inside of a ... but if not; I'm open to another approach. Question&Answers:os...

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

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c++ - Can we increase the re-usability of this key-oriented access-protection pattern?

Can we increase the re-usability for this key-oriented access-protection pattern: class SomeKey { friend class Foo; ... , thus i'm opening this question.) Question&Answers:os...

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

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php - PHPExcel runs out of 256, 512 and also 1024MB of RAM

I don't understand it. The XSLX table is about 3MB large yet even 1024MB ... D:dataoWebLibThirdPartysrcPHPExcelClassesPHPExcelReaderExcel2007.php on line 688 Question&Answers:os...

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

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What is ::class in PHP?

What is the ::class notation in PHP? A quick Google search returns nothing because of the nature of ... $commands = [ AppConsoleCommandsInspire::class, ]; Question&Answers:os...

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

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220 views

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positioning - jQuery: Difference between position() and offset()

What is the difference between position() and offset()? I tried to do the following in a click event: console. ... element is within a table cell in a table) Question&Answers:os...

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

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Create a variable name with "paste" in R?

See below: paste("perf.a", "1", sep="") # [1] "perf.a1" What if I want to assign a value to ... = 5 : # target of assignment expands to non-language object Question&Answers:os...

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

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c++ - Is the return type part of the function signature?

In C++, is the return type considered part of the function signature? and no overloading is allowed with just return type modified. Question&Answers:os...

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

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ruby - How do I convert a String object into a Hash object?

I have a string which looks like a hash: "{ :key_a => { :key_1a => 'value_1a', :key_2a => 'value_2a' } ... all the properties how a valid Hash is typed in Ruby. Question&Answers:os...

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

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249 views

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Read all contacts' phone numbers in android

I'm using this code to retrieve all contact names and phone numbers: String[] projection = new String[] { People. ... numbers as well. How can i do this? Question&Answers:os...

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

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152 views

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Strings as Primary Keys in SQL Database

Closed. This question needs details or clarity. It is not currently accepting answers. Question&Answers:os...

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

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c# - How to programmatically set the system volume?

How can I change the Windows System Sound Volume using a C# Application? Question&Answers:os...

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

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What is the "->" PHP operator called?

Closed. This question is opinion-based. It is not currently accepting answers. Question&Answers:os...

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

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361 views

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Difference between @import and link in CSS

I'm learning some CSS to tweak my project template. I come to this problem and didn't find a clear answer on the ... the best way to do it? and why? Thanks! Question&Answers:os...

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

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255 views

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javascript - Removing event listener which was added with bind

In JavaScript, what is the best way to remove a function added as an event listener using bind()? Example (function( ... ; Are there any better ways to do this? Question&Answers:os...

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

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402 views

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haskell - Monads with Join() instead of Bind()

Monads are usually explained in turns of return and bind. However, I gather you can also implement bind in terms of join ... it to sink in to my dumb brain... Question&Answers:os...

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

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168 views

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Order a MySQL table by two columns

How do I sort a MySQL table by two columns? What I want are articles sorted by highest ratings first, then most ... sort by one or the other, but not both. Question&Answers:os...

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

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205 views

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linux - MySQL - ERROR 1045 - Access denied

In some way I have managed to get this error when I try to access into MySQL via the command line: [root@localhost ... this, it will never be a FRESH install. Question&Answers:os...

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

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