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python - more efficient way to calculate distance in numpy?

i have a question on how to calculate distances in numpy as fast as it can, def getR1(VVm,VVs,HHm,HHs): t0=time. ... when i would put it 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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pagination - How to paginate a collection after get() in Laravel?

I have a merge on two query results which works fine: $events1 = AppEvent::Where('valid_to','>=',$today)-> ... works great and I did 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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windows - cmd is somehow writing Chinese text as output

I have some trouble with cmd.exe. I use it sometimes to create files and write there the output. But if I try ... the date. 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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How to control Indexing a field in lucene 4.0

Until Lucene version 3.9 , we could specify to index or not to index a field by using FIELD.INDEX.NO or FIELD.INDEX. ... i do it in lucene 4.0? See Question&Answers more detail:os...

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

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Sparse assignment list in python

I need a list with the following behavior >>> l = SparseList() >>> l [] >>> l[2] = "hello ... something similar exists in the standard library. 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 - Re.match() returns always none

I feel kind of stupid but it does not work: import re a = " ebrj wjrbw erjwek wekjb rjERJK ABB RAEJKE BWE ... None as the result of the match. See Question&Answers more detail:os...

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

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html - Label text is wrapped but not indent second line

I have a form with limited width, however the label text maybe longer than form width, so the text was wrapped ... ://jsbin.com/UvaqISO/2/edit 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++ - Class vs Struct for data only?

Is there any advantage over using a class over a struct in cases such as these? (note: it will only hold ... a struct instead of a class? 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 - Chaining "is" operators

Does python support chaining is operators, such as the following? a = None b = None a is b is None This ... some doc references would be nice. 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 - Replace NA values by row means

I want to replace my NA values from a matrix acquired by : read.table( ) Those values should be the mean of the ... 1.43 2 1 2 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 - How to perform Mouse Wheel scrolling over HTML5 Canvas in Selenium?

I am working on a GWT Application (similar to Paint). In this, I have an HTML5 Canvas in which there is a ... can be done to fix this issue? 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 - Why does calling dispose() on Graphics object cause JPanel to not render any components

After learning that dispose() should be called on Graphics/Graphics2D object after use, I went about changing my ... { return hoverFont; } } 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 - isalpha() giving an assertion

I have a C code in which I am using standard library function isalpha() in ctype.h, This is on Visual Studio ... want to be able to neglect 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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cran - R help page as object

Is there a nice way to extract get the R-help page from an installed package in the form of an R object (e ... a bit of overkill for my purpose. 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# - Could not find installable ISAM

I have the following code : string excelConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0; Data Source=C:dbsuc.xls; ... Open() . Any ideas ? See Question&Answers more detail:os...

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

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364 views

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html - Center Navbar links without brand pushing it to the right in Bootstrap 4?

I am trying to center my navbar links but when i do my brand logo pushes it to the right so it is not ... the position of my navbar links. See Question&Answers more detail:os...

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

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try catch - VBA: How long does On Error Resume Next work?

I'm reading up on how to use On Error Resume Next and I'm trying to figure out how long that line will apply ... need to. Thanks for your time. See Question&Answers more detail:os...

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

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651 views

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c# - High memory consumption with Enumerable.Range?

Originally i wanted to know whether ToList allocates more memory than using the constructor of List<T> which takes an ... MB List: 38,26 MB" See Question&Answers more detail:os...

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

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807 views

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Add some kind of row number to a mongodb aggregate command / pipeline

The idea is to return a kind of row number to a mongodb aggregate command/ pipeline. Similar to what we've ... generate this rownum in mongodb ? 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 - Passing parameters to action through ModelDriven in Struts 2

The issue is related to the ModelDriven and Struts 2.3.16. Since the behavior of the params interceptor ... action could display the value? See Question&Answers more detail:os...

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

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300 views

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c# - How do i split a String into multiple values?

How do you split a string? Lets say i have a string "dog, cat, mouse,bird" My actual goal is to insert each ... way to do this? im using asp 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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665 views

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file - How to execute JAVA program by double clicking on icon?

I have written a java program. Now I would like to open my console java application without IDE, Eclipse etc., ... JAVA ? 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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560 views

1 answer

angularjs share data config between controllers

I'm wondering what could be a good way to share directive between controller. I've got ie two directives to ... option :) MyTest.call($scope); See Question&Answers more detail:os...

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

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791 views

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dart - Null aware function invocation operator

In the same way we can have nullableClassInstance?.method(blah) Is there a way to do nullableFunctionInstance?(blah) ... all in one line? See Question&Answers more detail:os...

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

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307 views

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Use Multiple Character Delimiter in Python Pandas read_csv

It appears that the pandas read_csv function only allows single character delimiters/separators. Is there some way to ... or "%%" instead? See Question&Answers more detail:os...

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

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509 views

1 answer

How to add xml encoding <?xml version="1.0" encoding="UTF-8"?> to xml Output in SQL Server

Probably a duplicate of unanswered. SQL Server 2008 - Add XML Declaration to XML Output Please let me know if this is ... why I can't do 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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289 views

1 answer

How to enforce foreign keys in NoSql databases (MongoDB)?

Let's say I have a collection of documents such as: { "_id" : 0 , "owner":0 "name":"Doc1"},{ " ... real-word application. Thank you 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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561 views

1 answer

php - How to implement Content-Disposition: attachment?

I am trying to make it so that mp3's on my site are downloaded by left clicking instead of having to right click and ... .png"/></a> </div> See Question&Answers more detail:os...

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

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