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python - Best practice for using assert?

Is there a performance or code maintenance issue with using assert as part of the standard code instead of using ... becomes less then 0 an exception is raised? Question&Answers:os...

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

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c# - How to have an auto incrementing version number (Visual Studio)?

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

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266 views

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java - Difference between @Mock and @InjectMocks

What is the difference between @Mock and @InjectMocks in Mockito framework? Question&Answers:os...

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

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c++ - Getting a FILE* from a std::fstream

Is there a (cross-platform) way to get a C FILE* handle from a C++ std::fstream ? The reason I ask is because ... like to use a C library that accepts a FILE*. Question&Answers:os...

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

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405 views

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math - Javascript (+) sign concatenates instead of giving sum of variables

Why when I use this: (assuming i = 1) divID = "question-" + i+1; I get question-11 and not question-2? Question&Answers:os...

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

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83 views

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javascript - Browser-native JSON support (window.JSON)

I have seen references to some browsers natively supporting JSON parsing/serialization of objects safely and ... What browsers is it supported under? Question&Answers:os...

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

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397 views

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What's the difference of strings within single or double quotes in groovy?

def a = "a string" def b = 'another' Is there any difference? Or just like javascript to let's input ' and " easier in strings? Question&Answers:os...

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

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356 views

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syntax - What does "dyn" mean in a type?

I have recently seen code using the dyn keyword: fn foo(arg: &dyn Display) {} fn bar() -> Box<dyn Display> {} What does this syntax mean? Question&Answers:os...

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

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Javascript RegEx Not Working

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

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c++11 - Does C++ support Variable Length Arrays?

No, wait, bear with me... VLAs were always a GCC extension, but they were adopted by C99: [C99: 6.7.5. ... library facilities. So shouldn't C++11 have VLAs too? Question&Answers:os...

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

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r - "for" loop only adds the final ggplot layer

Summary: When I use a "for" loop to add layers to a violin plot (in ggplot), the only layer that is added is ... , per the errors noted in the "for" loop above Question&Answers:os...

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

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What happens when I print an uninitialized variable in C++?

Why does this print 32767 (or some other random number)? What is std::cout printing? Why is it not NULL (or 0)? int main() { int a; std::cout << a; } Question&Answers:os...

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

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Function returning address of local variable error in C

I have the following code: char* gen() { char out[256]; sprintf(out, ...); // you don't need to know ... char[] and char with no luck. Am I missing something? Question&Answers:os...

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

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69 views

1 answer

How do I get into a Docker container's shell?

I'm getting started working with Docker. I'm using the WordPress base image and docker-compose. I'm trying to ssh ... is the right way to do this with Docker? Question&Answers:os...

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

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170 views

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INNER JOIN vs LEFT JOIN performance in SQL Server

I've created SQL command that uses INNER JOIN on 9 tables, anyway this command takes a very long ... , ProductGroup2Cd ON e.ProductGroup1Cd = g2.ProductGroup1Cd Question&Answers:os...

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

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590 views

1 answer

media - Django MEDIA_URL and MEDIA_ROOT

I'm trying to upload an image via the Django admin and then view that image either in a page on the ... for uploaded media? Any advice appreciated. Thanks. Question&Answers:os...

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

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275 views

1 answer

How can I recognize touch events using jQuery in Safari for iPad? Is it possible?

Is it possible to recognize touch events on the iPad's Safari browser using jQuery? I used mouseOver and ... there are no events like mouseOut and mouseMove? Question&Answers:os...

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

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831 views

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c++ - How to convert wstring into string?

The question is how to convert wstring to string? I have next example : #include <string> #include <iostream> ... not be used to convert wstring into string. Question&Answers:os...

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

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215 views

1 answer

Binary search (bisection) in Python

Is there a library function that performs binary search on a list/tuple and return the position of the item if found ... to write my own code, as Moe suggested. Question&Answers:os...

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

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518 views

1 answer

python - Split cell into multiple rows in pandas dataframe

I have a dataframe contains orders data, each order has multiple packages stored as comma separated string [package & ... : How can I do that with pandas? Question&Answers:os...

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

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795 views

1 answer

drawing - C# - Faster Alternatives to SetPixel and GetPixel for Bitmaps for Windows Forms App

I am trying to teach myself C# and have heard from a variety of sources that the functions get and setpixel can be horribly slow. ... .G, f.B)); } } return b; } Question&Answers:os...

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

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267 views

1 answer

html - How can I simulate an anchor click via jquery?

I have a problem with faking an anchor click via jQuery: Why does my thickbox appear the first time I click on ... it seems to work every time. Any hints? Question&Answers:os...

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

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266 views

1 answer

PHP Sort Array By SubArray Value

I have the following array structure: Array ( [0] => Array ( [configuration_id] => 10 [id] => 1 [optionNumber] => ... [lastUpdated] => 2010-03-17 15:44:12 ) ) Question&Answers:os...

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

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539 views

1 answer

combobox - How to display default text "--Select Team --" in combo box on pageload in WPF?

In a WPF app, in MVP app, I have a combo box,for which I display the data fetched from Database. Before ... selects an item from combo box. Please guide me Question&Answers:os...

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

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360 views

1 answer

windows - How do you get the string length in a batch file?

There doesn't appear to be an easy way to get the length of a string in a batch file. E.g., SET MY_STRING= ... including escape characters, like this: !%^^()^!. Question&Answers:os...

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

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590 views

1 answer

bitmap - How to resize Image in Android?

I am creating an application and want to setup a gallery view. I do not want the images in the gallery view to be full size. How do I resize images in Android? Question&Answers:os...

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

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91 views

1 answer

javascript - Replace multiple strings at once

Is there an easy equivalent to this in JavaScript? $find = array("<", ">", " "); $replace = array("<" ... replace here $("#output").html(textarea); ... Question&Answers:os...

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

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97 views

1 answer

python - How to extract multiple JSON objects from one file?

I am very new to Json files. If I have a json file with multiple json objects such as following: {"ID": ... know a general way to deal with such problems? Question&Answers:os...

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

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