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python - ValueError: Length of values does not match length of index | Pandas DataFrame.unique()

I am trying to get a new dataset, or change the value of the current dataset columns to their unique values. ... length of index" both times. 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# - Should I use two "where" clauses or "&&" in my LINQ query?

When writing a LINQ query with multiple "and" conditions, should I write a single where clause containing && or ... expression; is this true? 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# - TestInitialize vs ClassInitialize

What is the difference between TestInitialize vs ClassInitialize in MSTest? What are the pros cons of each? I'm ... new instance of any 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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httpwebrequest - How can you add a Certificate to WebClient (C#)?

I know it is pretty simple to add a certificate to a HttpWebRequest. However, I have not found a way to do ... X509Certificate()); //add cert 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 - HTML5 iFrame Seamless Attribute

in HTML5 the iframe has new attributes like 'seamless' that should remove borders and scrollbars. I've tried it ... the page inside the 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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.net - How can I make a DateTimePicker display an empty string?

I would like to be able to display a DateTimePicker that has a default value of nothing, i.e. no date. For ... remain here for others to find.. 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# - Retrieving files from directory that contains large amount of files

I have directory that contains nearly 14,000,000 audio samples in *.wav format. All plain storage, no subdirectories. ... next 1000 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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firebase - Firestore get all docs and subcollections of root collection

Say I have this kind of structure A (collection): { a (doc): { name:'Tim', B (collection):{ b (doc): { color ... N is the depth of my tree :/. See Question&Answers more detail:os...

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

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visual studio 2010 - Re-establish TFS source control bindings

I have about a dozen Visual Studio 2010 projects I've been working on that are versioned in a TFS repository. ... be throwing off my mappings. See Question&Answers more detail:os...

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

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elasticsearch - UTF8 encoding is longer than the max length 32766

I've upgraded my Elasticsearch cluster from 1.1 to 1.2 and I have errors when indexing a somewhat big ... analyzer" for a not_analyzed field. 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# - Custom Assembly Attributes

I would like to know if I can define custom assembly attributes. Existing attributes are defined in the following ... a custom attribute.")] 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 dynamically modify <select> in materialize css framework

I just started using the materialize css framework. Now, materialize converts any select tag into a ... dynamically using javascript? 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 convert .txt file to Hadoop's sequence file format

To effectively utilise map-reduce jobs in Hadoop, i need data to be stored in hadoop's sequence file format. ... file to a sequence file? 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 - converting a number base 10 to base 62 (a-zA-Z0-9)

I have a number in base 10. Is there anyway to translate it to a base 62? Example: echo convert(12324324); // ... () can convert up to base 36. 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 - Hibernate use of PostgreSQL sequence does not affect sequence table

I've configured Hibernate to use PostgreSQL sequence (via annotations) to generate values for primary key id column ... generated id? 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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Objective C: SHA1

How do i sha1 a string or set of numbers in Objective 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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How does maven sort version numbers?

Maven seems to have the ability to indicate a range of versions such as <version>[1.2.3,)</ ... hibernate ignoring this versioning convention? See Question&Answers more detail:os...

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

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Run Selenium tests in multiple browsers one after another from C# NUnit

I'm looking for the recommended/nicest way to make Selenium tests execute in several browsers one after ... with different browser parameters. 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 - Create file but if name exists add number

Does Python have any built-in functionality to add a number to a filename if it already exists? My idea is that ... and next time "file3.pdf". 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 calculate a word-word co-occurrence matrix with sklearn?

I am looking for a module in sklearn that lets you derive the word-word co-occurrence matrix. I can get ... word-word matrix of co-ocurrences. 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 open an application from a Flutter app?

I am developing a Flutter app, in which I need to show navigation to the user for a place. So, how can I ... their is any flutter-plugin for 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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iphone - Entering background on iOS4 to play audio

The documentation is rather poorly written when talking about playing audio in the background. It gives the ... to be handled automagically. 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 - Angularjs: understanding a recursive directive

I found a great tree directive here. Original: http://jsfiddle.net/n8dPm/ I have been trying to understand the functioning ... ); }); }; }, See Question&Answers more detail:os...

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

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Correct Amazon MWS flow for item with existing ASIN

I'm getting started with Amazon MWS and I can't seem to see any real information on the correct flow for ... be made in what order. 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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iphone - Drag UIView around Shape Comprised of CGMutablePaths

I have a simple oval shape (comprised of CGMutablePaths) from which I'd like the user to be able to drag an ... the oval, and it orbits 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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python - class method generates "TypeError: ... got multiple values for keyword argument ..."

If I define a class method with a keyword argument thus: class foo(object): def foodo(thing=None, thong='not ... 'thing' What's going 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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sql - alternatives to REPLACE on a text or ntext datatype

I need to update/replace the data in datatable.column. The table has a field named Content. I'm using the ... be updated with a new solution. 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 the pipe(|) mean in typescript?

While browsing some typescript code of @ng-bootstrap I have found pipe(|) operator. export declare const ... ) operator in typescript? See Question&Answers more detail:os...

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

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