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I'm having a bit of a problem trying to import data from a CSV and have a couple of questions on it ... execution time of 30 seconds exceeded" any thoughts? Question&Answers:os...

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

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c++ - Why do C++11-deleted functions participate in overload resolution?

Why does C++11 make "deleted" functions participate in overload resolution? Why is this useful? Or in ... are they hidden instead of being deleted entirely? Question&Answers:os...

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

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325 views

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jquery - How to trigger click event on href element

I'm trying to trigger click event on hyperlink with jQuery like the way below. Hyperlink does not have ... " class="cssbuttongo">hyperlink anchor</a> Question&Answers:os...

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

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java - The literal xyz of type int is out of range

I am working with data types at the moment in Java, and if I have understood correctly the type long ... testDouble = 4.940656458412; boolean testBool = true; Question&Answers:os...

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

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Learning C++: polymorphism and slicing

Consider the following example: #include <iostream> using namespace std; class Animal { public: virtual void ... be interested in another question of mine. Question&Answers:os...

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

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html - Why is form enctype=multipart/form-data required when uploading a file?

Why is <form enctype=multipart/form-data> required when uploading a file to a web-server? Question&Answers:os...

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

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A numeric string as array key in PHP

Is it possible to use a numeric string like "123" as a key in a PHP array, without it being converted to an integer? $blah ... array(1) { ["123"]=> int(1) } Question&Answers:os...

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

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database - Implementation of Levenshtein distance for mysql/fuzzy search?

I would like to be able to search a table as follows for smith as get everything that it within 1 variance. ... does anyone know how to implement this with it? Question&Answers:os...

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

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bash - How to call shell script from php that requires SUDO?

I have a file that is a bash script that requires SUDO to work. I can run it from the command line using SUDO ... sudo with the sudo call? How can I do this? Question&Answers:os...

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

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templates - heredoc for Windows batch?

Is there a way of specifying multiline strings in batch in a way similar to heredoc in unix shells. Something ... a customized file from a template file.. Question&Answers:os...

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

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446 views

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javascript - Why does forms with single input field submit upon pressing enter key in input

Why is it that a <form> with a single <input> field will reload the form when the user enters a value and presses the ... the Enter key why</p> </body> </html> Question&Answers:os...

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

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Pass a String from one Activity to another Activity in Android

This is my string: private final String easyPuzzle ="630208010200050089109060030"+ "008006050000187000060500900"+ " ... the 9*9 sudoku board. Question&Answers:os...

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

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163 views

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c# - Is shifting bits faster than multiplying and dividing in Java? .NET?

Closed. This question needs to be more focused. 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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big o - What is the Big-O of a nested loop, where number of iterations in the inner loop is determined by the current iteration of the outer loop?

What is the Big-O time complexity of the following nested loops: for (int i = 0; i < N; i++) { for (int j = i + 1; ... = " + j); } } Would it be O(N^2) still? Question&Answers:os...

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

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116 views

1 answer

c# - Pivot data using LINQ

I have a collection of items that contain an Enum (TypeCode) and a User object, and I need to flatten it out ... Can this be done in Linq in a cleaner fashion? Question&Answers:os...

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

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311 views

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string - Replace substring with another substring C++

How could I replace a substring in a string with another substring in C++, what functions could I use? ... occurrence of abc and def with other substring Question&Answers:os...

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

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c++ - Why SDL defines main macro?

After having some trouble setting up SDL, I found out that SDL defines a macro that replaces main: #define main ... and this behavior stops if I undefine main. Question&Answers:os...

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

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519 views

1 answer

When running WebDriver with Chrome browser, getting message, "Only local connections are allowed" even though browser launches properly

When I run Chrome browser using WebDriver, I am getting following message on console. Please let me know how to resolve ... driver.close(); driver.quit(); } } Question&Answers:os...

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

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534 views

1 answer

swift - Sending json array via Alamofire

I wonder if it's possible to directly send an array (not wrapped in a dictionary) in a POST request ... [ "06786984572365", "06644857247565", "06649998782227" ] Question&Answers:os...

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

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306 views

1 answer

python - Why am I getting AttributeError: Object has no attribute?

Closed. This question is not reproducible or was caused by typos. 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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201 views

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css - Is there any way to hover over one element and affect a different element?

This question already has answers here: Question&Answers:os...

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

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73 views

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sql - MySQL "WITH" clause

I'm trying to use MySQL to create a view with the "WITH" clause WITH authorRating(aname, rating) AS SELECT aname ... innoDB engine. Both of these don't work. Question&Answers:os...

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

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133 views

1 answer

security - How safe are PHP session variables?

I have a login script that verifies a username/password against data in a 'user' table. Furthermore, I have ... logged in user's authorization level. Thanks. Question&Answers:os...

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

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501 views

1 answer

Encrypt and Decrypt text with RSA in PHP

Is there any class for PHP 5.3 that provides RSA encryption/decryption without padding? I've got private and public key, p,q, and modulus. Question&Answers:os...

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

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194 views

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c# - Read XML Attribute using XmlDocument

How can I read an XML attribute using C#'s XmlDocument? I have an XML file which looks somewhat like this: <? ... can't figure out how to get the attributes? Question&Answers:os...

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

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515 views

1 answer

web scraping - Using python Requests with javascript pages

I am trying to use the Requests framework with python (http://docs.python-requests.org/en/latest/) ... the requests framework with pages that use javascript? Question&Answers:os...

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

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344 views

1 answer

r - Subset dataframe by multiple logical conditions of rows to remove

I would like to subset (filter) a dataframe by specifying which rows not (!) to keep in the new dataframe. Here ... but that doesn't seem to exist. Any ideas? Question&Answers:os...

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

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74 views

1 answer

c++ - Is ncurses available for windows?

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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