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python - How to group a pandas dataframe by a defined time interval?

I have a dataFrame like this, I would like to group every 60 minutes and start grouping at 06:30. data ... and thanks very much 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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android - findViewById() returns null when I call it in onCreate()

I'm having a problem with the findViewById on my first android app. I'm trying to call this function but ... (message); return rootView; } See Question&Answers more detail:os...

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

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Automating Office via Windows Service on Server 2008

We have a Windows Service which runs on 2003 Server. It opens a source Word document using the Word Interop and ... be able to do this. 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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excel - Retrieving the COM class factory for component failed

I am using an excel object (COM component) for excel manipulation. It works fine on my PC, but when I ... gives the same error. Please 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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reporting services - SSRS Expression Divide by Zero Error

I have a tablix box that has a division expression. When dividing by zero or nulls I get #Error displayed in my ... this that I'm not getting?! See Question&Answers more detail:os...

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

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VBA (Excel) Dictionary on Mac?

I have an Excel VBA project that makes heavy use of Windows Scripting Dictionary objects. I recently had ... Else DoTheWindowsRoutine End If 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 dangerous is setting self.__class__ to something else?

Say I have a class, which has a number of subclasses. I can instantiate the class. I can then set its ... if there are better alternatives). See Question&Answers more detail:os...

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

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How do I execute a Shell built-in command with a C function?

I would like to execute the Linux command "pwd" through a C language function like execv(). The issue is ... with no executable to be found. 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 - Getting each individual digit from a whole integer

Let's say I have an integer called 'score', that looks like this: int score = 1529587; Now what I want to ... thought it'd be simpler that way. 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++ - Why is the destructor of the class called twice?

Apologies if the question sounds silly, I was following experts in SO and trying some examples myself, and this is ... the class called twice ? 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 - Get value of input field inside an iframe

I am creating a form with Javascript only. I am trying to use Javascript to get the value of the input field ... field that is inside an iframe? See Question&Answers more detail:os...

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

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image - RGB to HSV in PHP

In PHP, what is the most straightforward way to convert a RGB triplet to HSV 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 - Undefined reference to `initscr' Ncurses

I'm trying to compile my project and I use the lib ncurse. And I've got some errors when compiler links ... returned 1 exit status Thanks a lot 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 - Count number of zeros per row, and remove rows with more than n zeros

I have a question about counting zeros per row. I have a dataframe like this: a = c(1,2,3,4,5,6,0,2,5) ... 4 5 4 Is that possible?? 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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java - What is the JVM thread scheduling algorithm?

I am really curious about how the JVM works with threads! In my searches on the internet, I found some ... appreciate any help, 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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utf 8 - How to display japanese Kanji inside a cmd window under windows?

I have an english Windows 2003 server with asiatic language support activated. The two only fonts available for the ... .5 (untested by me) 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 - Efficient 4x4 matrix vector multiplication with SSE: horizontal add and dot product - what's the point?

I am trying to find the most efficient implementation of 4x4 matrix (M) multiplication with a vector (u) using SSE. I mean ... 2, 0, 2, 0)); } See Question&Answers more detail:os...

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

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image processing - Finding number of colored shapes from picture using Python

My problem has to do with recognising colours from pictures. Doing microbiology I need to count the number ... more elegantly. Regards, Sander 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# - How do I interpolate strings?

I want to do the following in C# (coming from a Python background): strVar = "stack" mystr = "This is ... with the value outside of it? See Question&Answers more detail:os...

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

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node.js - AWS lambda api gateway error "Malformed Lambda proxy response"

I am trying to set up a hello world example with AWS lambda and serving it through api gateway. I ... : Malformed Lambda proxy response". 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 - Gradle DSL method not found: 'compile()'

I had this gradle error. Error:(9, 0) Gradle DSL method not found: 'compile()' I have tried refering to similar ... } What's wrong with my code? See Question&Answers more detail:os...

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

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Performance difference between Java 8 lambdas and anonymous inner classes

Before Java 8, lambda functionality could be achieved by using anonymous inner classes. For example: interface Lambda { ... new Java 8 lambdas? 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 - How to stringify inherited objects to JSON?

json2.js seems to ignore members of the parent object when using JSON.stringify(). Example: require('./json2.js') ... position":0, "someVal":50} See Question&Answers more detail:os...

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

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css - Change the order of col-*-12 columns in Bootstrap using push/pull

I have two columns of the same size (.col-xs-12) and I would change their place when the screen size correspond ... -12.col-xs-pull-12 p test2 See Question&Answers more detail:os...

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

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.net - How to get files in a relative path in C#

If I have an executable called app.exe which is what I am coding in C#, how would I get files from a folder ... How would one do this in C#? 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# - What is IMEX within OLEDB connection strings?

"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=localhost;Extended Properties=""Excel 8.0;HDR=Yes;IMEX=2" What ... in the above connection string? 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 - _jspService is exceeding the 65535 bytes limit

So I'm dealing with a legacy servlet code that runs on Websphere 7 (JDK 6). Development environment setup uses ... main template of the app. 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++ - Why does "extern const int n;" not work as expected?

My project consists of only two source files: a.cpp: const int n = 8; b.cpp: extern const int n; int main( ... I just wonder WHY it does't work? See Question&Answers more detail:os...

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

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