大约有 47,000 项符合查询结果(耗时:0.0556秒) [XML]

https://stackoverflow.com/ques... 

Reading an Excel file in PHP [closed]

...Excel file (Office 2003). There is an Excel file that needs to be uploaded and its contents parsed. 8 Answers ...
https://stackoverflow.com/ques... 

Does Java support default parameter values?

... No, the structure you found is how Java handles it (that is, with overloading instead of default parameters). For constructors, See Effective Java: Programming Language Guide's Item 1 tip (Consider static factory methods instead of constructors) if the overloading ...
https://stackoverflow.com/ques... 

Choice between vector::resize() and vector::reserve()

... The two functions do vastly different things! The resize() method (and passing argument to constructor is equivalent to that) will insert or delete appropriate number of elements to the vector to make it given size (it has optional second argument to specify their value). It will affect the ...
https://stackoverflow.com/ques... 

Why does one hot encoding improve machine learning performance?

...ced that when One Hot encoding is used on a particular data set (a matrix) and used as training data for learning algorithms, it gives significantly better results with respect to prediction accuracy, compared to using the original matrix itself as training data. How does this performance increase h...
https://stackoverflow.com/ques... 

What kind of virtual machine is BEAM (the Erlang VM)?

From what I understand a virtual machine falls into two categories either "system virtual machine" or a "process virtual machine". It's kind of fuzzy to me where BEAM lies. Is there another kind of virtual machine I am not aware of? ...
https://stackoverflow.com/ques... 

Provide an image for WhatsApp link sharing

... 2020 standards It takes a few steps to get the perfect preview for WhatsApp, Twitter, Facebook and bookmark icons for pc's and mobile devices. If you like reading go to ogp.me - but make sure to read steps 1 - 6 in this answer to ge...
https://stackoverflow.com/ques... 

Why is reading lines from stdin much slower in C++ than Python?

I wanted to compare reading lines of string input from stdin using Python and C++ and was shocked to see my C++ code run an order of magnitude slower than the equivalent Python code. Since my C++ is rusty and I'm not yet an expert Pythonista, please tell me if I'm doing something wrong or if I'm mis...
https://stackoverflow.com/ques... 

How to saveHTML of DOMDocument without HTML wrapper?

...gling to output the DOMDocument without it appending the XML, HTML, body and p tag wrappers before the output of the content. The suggested fix: ...
https://stackoverflow.com/ques... 

How to delete an old/unused Data Model Version in Xcode

... I tried this technique and found that due to the way my model versions were named, the model version were re-sorted improperly and the wrong default version was selected as I re-added the xcdatamodel file into the project. This may be because I am ...
https://stackoverflow.com/ques... 

Renaming or copying files and folder using NERDTree on Vim. Is it possible?

I checked the documentation and I couldn't find a way o renaming or copying files and folder using NERDTree. Is it possible? ...