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I have a CSV file with about 2000 records. Each record has a string, and a category to it: This is the ... import this CSV to the list I need using Python? Question&Answers:os...

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

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java - PersistentObjectException: detached entity passed to persist thrown by JPA and Hibernate

I have a JPA-persisted object model that contains a many-to-one relationship: an Account has many ... associated with an already persisted Account object? Question&Answers:os...

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

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c++ - How to properly overload the << operator for an ostream?

I am writing a small matrix library in C++ for matrix operations. However my compiler complains, where before it did ... doing lots of Java those 6 months. :-) Question&Answers:os...

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

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messaging - How to send image via MMS in Android?

I am working on a multimedia application. I am capturing one image through the camera and want to send that image ... how to send the image via the MMS. Question&Answers:os...

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

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javascript - Changing the browser zoom level

I have need to create 2 buttons on my site that would change the browser zoom level (+) (-). I'm ... is this even possible? I've heard conflicting reports. Question&Answers:os...

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

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javascript - Is it possible to use JS to open an HTML select to show its option list?

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

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Intellij IDEA Maven Import problems

I wanted to switch to IntelliJ for forge modding (minecraft). When I do what they are saying to do on internet, I ... seems to have my problem... help please ? Question&Answers:os...

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

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Commit only part of a file in Git

When I make changes to a file in Git, how can I commit only some of the changes? For example, how could I ... of 30 lines that have been changed in a file? Question&Answers:os...

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

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Purpose of memory alignment

Admittedly I don't get it. Say you have a memory with a memory word of length of 1 byte. Why can't you access ... 4), as it's the case with aligned addresses? Question&Answers:os...

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

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php - Force SSL/https using .htaccess and mod_rewrite

How can I force to SSL/https using .htaccess and mod_rewrite page specific in PHP. Question&Answers:os...

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

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sql - MySQL LIKE IN()?

My current query looks like this: SELECT * FROM fiberbox f WHERE f.fiberBox LIKE '%1740 %' OR f.fiberBox LIKE ' ... 've never seen. MySQL 5.0.77-community-log Question&Answers:os...

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

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css - Floating elements within a div, floats outside of div. Why?

Say you have a div, give it a definite width and put elements in it, in my case an img and another div. ... items to stretch out the height of a containing div? Question&Answers:os...

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

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javascript - How to load external scripts dynamically in Angular?

I have this module which componentize the external library together with additional logic without adding the <script> ... 2 to load a script dynamically? Question&Answers:os...

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

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Which is the preferred way to concatenate a string in Python?

Since Python's string can't be changed, I was wondering how to concatenate a string more efficiently? I can ... would be did something change in Python 3? Question&Answers:os...

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

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jquery - What's the point of the X-Requested-With header?

JQuery and other frameworks add the following header: X-Requested-With: XMLHttpRequest Why is this needed? Why ... requested with AJAX, no redirection is done. Question&Answers:os...

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

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memory management - delete vs delete[] operators in C++

What is the difference between delete and delete[] operators in C++? Question&Answers:os...

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

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What is the maximum size of a web browser's cookie's key?

What is the maximum size of a web browser's cookie's key? I know the maximum size of a cookie is 4KB, but does the key have a limitation as well? Question&Answers:os...

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

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c++ - Reading from text file until EOF repeats last line

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

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javascript - Efficiently replace all accented characters in a string?

For a poor man's implementation of near-collation-correct sorting on the client side I need a JavaScript ... this category of problem much more elegantly. Question&Answers:os...

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

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android - how to get html content from a webview?

Which is the simplest method to get html code from a webview? I have tried several methods from stackoverflow and google, but ... ","text/html","utf-8"); } } Question&Answers:os...

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

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android - Basic communication between two fragments

I have one activity - MainActivity. Within this activity I have two fragments, both of which I created declaratively ... So I'm guessing I would start there? Question&Answers:os...

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

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Changing the current working directory in Java?

How can I change the current working directory from within a Java program? Everything I've been able to find ... to open files using relative file paths.... Question&Answers:os...

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

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r - How can I remove all duplicates so that NONE are left in a data frame?

There is a similar question for PHP, but I'm working with R and am unable to translate the solution to my problem ... to 100 rows) where this gets a bit tricky. Question&Answers:os...

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

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155 views

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javascript - Use arrow function in vue computed does not work

I am learning Vue and facing a problem while using arrow function in computed property. My original code works fine (See ... " :class="switchBlue"></div> </div> Question&Answers:os...

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

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260 views

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r - Example of using dput()

Being a new user here , my questions are not being fully answered due to not being reproducible. I read the thread ... iris df for eg it would be very helpful. Question&Answers:os...

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

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107 views

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android - DexIndexOverflowException Only When Running Tests

I can successfully build and run my Android app in my debug and release variants with no problem. Yet, when I ... to figure this out yet I found nothing. Question&Answers:os...

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

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151 views

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jquery - Set class validation for dynamic textbox in a table

I have a table that have a row of dynamic textbox. Example below: I add the row in the table by clicking ... issue. Really appreciate your guys help. Thank you. Question&Answers:os...

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

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How do I get currency exchange rates via an API such as Google Finance?

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Question&Answers:os...

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

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