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when is static variable loaded in java, runtime or compile time?

When is static variable loaded, runtime or compile time? Can someone please explain it. I would really appreciate the help. Thank you. See Question&Answers more detail:os...

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python - Trouble installing scipy in virtualenv on a amazon ec2 linux micro instance

I have successfully installed scipy in the default python compiler on an amazon ec2 micro instance (Ubuntu 13.04). However ... .0 wsgiref==0.1.2 See Question&Answers more detail:os...

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python - Why is pandas.to_datetime slow for non standard time format such as '2014/12/31'

I have a .csv file in such format timestmp, p 2014/12/31 00:31:01:9200, 0.7 2014/12/31 00:31: ... to_datetime when reading date from a csv file? See Question&Answers more detail:os...

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In some code I've inherited, I see frequent use of size_t with the std namespace qualifier. For example: std:: ... return sizeof( long ); } See Question&Answers more detail:os...

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I'm wanting to use some newer software that requires Python 2.6, and we currently have both 2.4 and 2.6 ... using 2.6 as the default python? See Question&Answers more detail:os...

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Does Mongoose support the Mongodb `findAndModify` method?

I would like to use findAndModify to atomically increment a field, using Mongoose. However, the code below throws the ... updated!"); } }); See Question&Answers more detail:os...

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c# - Should the repository layer return data-transfer-objects (DTO)?

I have a repository layer that is responsible for my data-access, which is called by a service layer. The service ... to be sent over the wire. See Question&Answers more detail:os...

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java 8 - Lazy field initialization with lambdas

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javascript - Why can't I reliably capture a mouseout event?

I need to know when the mouse cursor leaves a div. So I hook up the mouseout event. However, if I ... one presented above) would be welcome. See Question&Answers more detail:os...

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python - scipy, lognormal distribution - parameters

I want to fit lognormal distribution to my data, using python scipy.stats.lognormal.fit. According to the manual, fit ... get mean and std.dev.? See Question&Answers more detail:os...

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Having issue on Real Device using vector image in android. SVG-android

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Hello world using nasm in windows assembly

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python - Get first letter of a string from column

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css - How to get Floating DIVs inside fixed-width DIV to continue horizontally?

I have a container DIV with a fixed height and width (275x1000px). In this DIV I want to put multiple ... on without going beneath each other? See Question&Answers more detail:os...

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How can I launch the 'Add Contact' activity in android

Can you please tell me how to launch the Add Contact' activity in android? Thank you. See Question&Answers more detail:os...

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character encoding - PHP generated XML shows invalid Char value 27 message

I am generating XML using PHP library as below: $dom = new DOMDocument("1.0","utf-8"); Doing above results ... the chinese character in UTF-8. See Question&Answers more detail:os...

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Is there a way to determine where a WPF Binding is declared/created?

I have a project which is throwing some data binding errors. One example is: System.Windows.Data Error: 4 : ... applied to the MenuItems here. 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 - Variable sized padding in printf

Is there a way to have a variable sized padding in printf? I have an integer which says how large the padding is ... the number of '#' symbols. See Question&Answers more detail:os...

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r - Can Sweave produce many pdfs automatically?

I analyze measurements from many cities (hundreds), and need to create separate reports per city (in Adobe pdf- ... you r-contributors! /Chris See Question&Answers more detail:os...

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sql - String concatenation does not work in SQLite

I am trying to execute a SQlite replace function, but use another field in the function. select locationname + '<p>' ... and the '<p>' literals. See Question&Answers more detail:os...

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Today I installed opencv 2.4.4 to Ubuntu 12.10 But import cv2 not works. root@-:~# python Python 2.7.3 (default ... so ? And why it was missed ? See Question&Answers more detail:os...

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Rails naming convention for join table

This questions stems from: How to link form after creating rails join table I am creating the join ... category_products or something else? See Question&Answers more detail:os...

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How to use unicode in Android resource?

I want to use this unicode character in my resource file. But whatever I do, I end with dalvikvm ... String geolocation_icon = "uD83DuDCE1"; See Question&Answers more detail:os...

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Testing SMTP server is running via C#

How can I test SMTP is up and running via C# without sending a message. I could of course try: try{ // send ... a more tidy way to do this. See Question&Answers more detail:os...

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NSData-AES Class Encryption/Decryption in Cocoa

I am attempting to encrypt/decrypt a plain text file in my text editor. encrypting seems to work ... documentAttributes:NULL error:outError]; See Question&Answers more detail:os...

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

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