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python - How to fix 'numpy.ndarray' object has no attribute 'get_figure' when plotting subplots

I have written the following code to plot 6 pie charts in different subplots, but I get an error. This code works ... ' How do we rectify this? See Question&Answers more detail:os...

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python - How to zip two array columns in Spark SQL

I have a Pandas dataframe. I have tried to join two columns containing string values into a list first and ... this? Any help is appreciated. See Question&Answers more detail:os...

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security - Using a Single system() Call to Execute Multiple Commands in C

In an information security lab I'm working on, I've been tasked with executing multiple commands with a single call ... ??? "; system(command); See Question&Answers more detail:os...

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Can I handle the killing of my windows process through the Task Manager?

I have a windows C++ application (app.exe). When the app is closed, I need to perform some cleanup ... for SIGTERM and perform the cleanup. See Question&Answers more detail:os...

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java - Locking mechanism of Mifare Classic 1K

The procedure of Mifare Classic 1K is Polling for tags Authenticate those tags If authentication succeded then read/ ... from a specific sector? See Question&Answers more detail:os...

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loops - How to iterate over list which contains whitespaces in bash

Could you please tell me how to iterate over list where items can contain whitespaces? x=("some word", "other word ... word (...) third word See Question&Answers more detail:os...

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java - Why do we need to extend JFrame in a swing application?

Why do we need to extend the JFrame class when building a Swing application. As far as I know extends is used ... .getActionCommand()); } } } See Question&Answers more detail:os...

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c - How to know on which physical processor and on which physical core my code is running

How can I know in a C program, on which physical processor and core my code is running? I'm using Linux and gcc 4.4.3. See Question&Answers more detail:os...

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oop - Difference between value parameter and reference parameter?

Difference between value parameter and reference parameter ? This question is asked sometime by interviewers during my ... same thing ? Thanks See Question&Answers more detail:os...

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Enabling and disabling controls on a Continuous Subform in Access 2007/2010

I need to enable or disable a control on a continuous subform, dependent on another field. The initial code I ... .Enabled = False End If See Question&Answers more detail:os...

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python - Regex: match only outside parenthesis (so that the text isn't split within parenthesis)?

I have a target string which looks like this: "foo (foo, foofoo), bar (foobar), foo, bar (barbar, foo ... but any language example is fine. See Question&Answers more detail:os...

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Web SQL Database + Javascript loop

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C# XNA Visual Studio: Difference between "release" and "debug" modes?

I'm working on a demo about collision detection. (Some of the code for this is detailed here.) In ... development. It just recently stopped. See Question&Answers more detail:os...

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c# - How can I get all controls from a Form Including controls in any container?

I need, for example, a way to disable all buttons in a form or validate all textboxes' data. Any ideas? Thanks in advance! See Question&Answers more detail:os...

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java - ORA-12514: TNS:listener does not currently know of service requested in connect descriptor

I have problem, when trying to connect to Oracle Database XE via listener: sqlplus system/my_password@XE ... The command completed successfully 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 - Dot Notation vs Method Notation

I'm diving into iOS programming and I'm having difficulty getting my head around the idea of Dot ... stringByAppendingFormat:digit; } Thanks. See Question&Answers more detail:os...

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objective c - Compare two arrays with the same value but with a different order

I have 2 nsarray, with the same values but in different order. NSArray * array1 = {0,1,2,3} NSArray * ... (NSArray*)array1 and:(NSArray*)array2; See Question&Answers more detail:os...

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c# - Access denied while getting process path

I am trying to get process path by pid but I'm getting Win32Exception (access id denied). The code looks ... running it as an administrator. See Question&Answers more detail:os...

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c# - How To Start And Stop A Continuously Running Background Worker Using A Button

Let's say I have a background worker like this: private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e) ... button on a WinForm? See Question&Answers more detail:os...

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c# - Create RDLC report dynamically at run-time from a DataGridView

I have a form AdvancedSearchForm with a DataGridView control dgrData and a button Report in C# Winform. On click ... where I have DataGrids. See Question&Answers more detail:os...

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sql - Parallel unnest() and sort order in PostgreSQL

I understand that using SELECT unnest(ARRAY[5,3,9]) as id without an ORDER BY clause, the order of the result ... I am using PostgreSQL 9.3.3. See Question&Answers more detail:os...

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r - XPath and namespace specification for XML documents with an explicit default namespace

I'm struggling to get the correct combination of an XPath expression and the namespace specification as required by ... ) [1] "XMLNodeSet" See Question&Answers more detail:os...

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r - How to sort all dataframes in a list of dataframes on the same column?

I have a list of dataframes dataframes_list. For an example, I put the dput(dataframes_list) at the bottom. I want ... class = "data.frame")) See Question&Answers more detail:os...

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c - Why does printf print wrong values?

Why do I get the wrong values when I print an int using printf("%f ", myNumber)? I don't understand why it ... d, e); //prints weird stuff See Question&Answers more detail:os...

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.net - /LinkResource in Visual Studio 2010

/linkresource is a csc option that allows to link an assembly to its unmanaged dependencies. When the managed ... Thanks in advance, aalmada 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++ - Is self-initialization 'A a = a;' allowed?

This code fails at runtime in the copy constructor. But the compiler (MSVS2008) issues no warnings. Could you explain ( ... { A a = a; } See Question&Answers more detail:os...

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python - Are strings cached?

>>> a = "zzzzqqqqasdfasdf1234" >>> b = "zzzzqqqqasdfasdf1234" >>> id(a) 4402117560 >>> id(b) 4402117560 ... just "string". Thanks for feedback See Question&Answers more detail:os...

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linux - kernel symbol marked with "T" in /proc/kallsyms is not exported

Symbol machine_power_off is marked with "T" in /proc/kallsyms: $ grep -w machine_power_off /proc/kallsyms ... but not in VirtualBox? See Question&Answers more detail:os...

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

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