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python - Convert a columns of string to list in pandas

I have a problem with the type of one of my column in a pandas dataframe. Basically the column is saved in a csv ... able to do it? Thank you. 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 - numpy: efficiently summing with index arrays

Suppose I have 2 matrices M and N (both have > 1 columns). I also have an index matrix I with 2 columns -- ... to do this other than a for loop? See Question&Answers more detail:os...

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

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Serializing and De-Serializing android.graphics.Bitmap in Java

I have started work on an my first android application and have the basis of an application that handles an image ... 0, currentPaint); } } See Question&Answers more detail:os...

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

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linux - SONAR - Measure Code Coverage using Cobertura

I am using sonar to measure code quality. One thing that I do not know is the steps to measure code coverage ... LINUX. Thanks for the 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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ios - Generate random numbers with a given distribution

Check out this question: Swift probability of random number being selected? The top answer suggests to use a switch ... consider? (like ~30) 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 2.7 - ImportError when importing certain modules from SciPY

I have used Scipy for some time. This is the first time I am using it for Signal processing! But when I import ... Windows. What should I do ? See Question&Answers more detail:os...

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

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Microsoft office Access `LIKE` VS `RegEx`

I have been having trouble with the Access key term LIKE and it's use. I want to use the following RegEx ( ... $" How can this be accomplished? 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 - How do I use a keyword as a variable name?

I have the following class with the variables from, to and rate. from is a keyword. If I want to use it ... (self, obj): return obj.__dict__ 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 - Pandas - write Multiindex rows with to_csv

I am using to_csv to write a Multiindex DataFrame to csv files. The csv file has one column that contains the ... there a 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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javascript - Conditional where clause in firestore queries

I have fetch some data from firestore but in my query I want to add a conditional where clause. I am using async- ... ">", 1000000) and so 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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Printf is not working in C signal handler

Code in question first (minimized case): #include <stdio.h> #include <signal.h> int counter = 0; void react_to_signal ... can I read up on 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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jsf - Split java.util.Date over two h:inputText fields representing hour and minute with f:convertDateTime

I would like to set up a Date field in my page like this |hours| h |minutes| where hours and minutes are in ... .) Do you have an idea? Thanks 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# - WPF How to access control from DataTemplate

I have a datatemplate which contains a grid and inside the grid I have a combobox. <DataTemplate x:Key=" ... to basically set its DataContext? See Question&Answers more detail:os...

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

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macos - push on 64bit intel osx

I want to push 64 bit address on stack as below, __asm("pushq $0x1122334455667788"); But I get compilation ... if my question sounds stupid. See Question&Answers more detail:os...

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

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jsf - @Inject to pass params to a CDI @Named bean via URL

If I cannot use the @ManagedProperty annotation with @Named, because @ManagedProperty doesn't work in CDI(?), then how do ... ().toString(); } } See Question&Answers more detail:os...

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

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What does this JavaScript/jQuery syntax mean?

What does the following syntax mean? (function($){ $.fn.columnize = function(options) { ... What’s function($)? What’s $.fn. …? 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: t-test over all columns

I tried to do t-test to all columns (two at a time) of my data frame, and extract only the p-value. Here ... capture the results of the t-test. 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 - WordPress prepared statement with IN() condition

I have three values in a string like this: $villes = '"paris","fes","rabat"'; When I feed it ... statement in WordPress with multiple values? 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++ - Address of register variable

In C, we cannot use & to find out the address of a register variable but in C++ we can do the ... someone please explain this concept in-depth. 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 - how to create jar file using eclipse

I have a folder name called configurator which has many sub folders and class files. I need to create a ... to do it using eclipse? 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# - Problems overwriting (re-saving) image when it was set as image source

Good day all, I am having some trouble with image permissions. I am loading an image from file, resizing it ... (); imgAsset.Source = imgTemp; 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# - Working with AppDomain.AssemblyResolve event

I'm trying to use AppDomain.AssemblyResolve event to handle exceptions while resolving Assemblies of some dll loaded at ... when it is fired? 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# - Best Practice: Convert LINQ Query result to a DataTable without looping

What is the best practice to convert LINQ-Query result to a new DataTable? can I find a solution better than ... I do? and Need linq 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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io - Read a file line by line in Prolog

I'd like to read a plain text file and apply a predicate to each line (the predicates contain write which does the output). How would I do that? See Question&Answers more detail:os...

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

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android - ArrayAdapter.NotifyDataSetChanged() is not working?

I have a list that can be updated by the user, but notifyDataSetChanged() is not working on the adapter ... updated? Any helps is appreciated. 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 - Warning: mysql_query(): 3 is not a valid MySQL-Link resource

I got this odd error and I can't figure out where it came from: Warning: mysql_query(): 3 is ... Has anyone experienced this error themselves? See Question&Answers more detail:os...

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

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xamarin.android - Xamarin-System.UnauthorizedAccessException: Access to the path is denied

I'm trying to download a file and I'm getting System.UnauthorizedAccessException: Access to the path "/storage/ ... issue. Thanks in Advance. See Question&Answers more detail:os...

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

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Are JavaScript Arrays actually implemented as arrays?

The difference between a JavaScript Array, and Object is not very big. In fact it seems Array mainly adds the ... WebGL typed arrays cough). See Question&Answers more detail:os...

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

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