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mysql - Location of my.cnf file on macOS

I'm trying to follow along this tutorial to enable remote access to MySQL. The problem is, where should my.cnf file be located? I'm using Mac OS X Lion. Question&Answers:os...

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

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c++ - How is "=default" different from "{}" for default constructor and destructor?

I originally posted this as a question only about destructors, but now I'm adding consideration of the default ... struck me as the less desirable option. Question&Answers:os...

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

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c# - Difference between RegisterStartupScript and RegisterClientScriptBlock?

Is the only difference between the RegisterStartupScript and the RegisterClientScriptBlock is that RegisterStartupScript ... would I use ScriptManagerProxy? Question&Answers:os...

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

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java - How to convert OutputStream to InputStream?

I am on the stage of development, where I have two modules and from one I got output as a OutputStream and ... will be able to connect these two parts? Thanks Question&Answers:os...

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

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How to push to a non-bare Git repository?

I usually work on a remote server via ssh (screen and vim), where I have a Git repository. Sometimes I'm ... I then push my changes to my remote repository? Question&Answers:os...

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

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security - Non-random salt for password hashes

UPDATE: I recently learned from this question that in the entire discussion below, I (and I am sure others did ... , but it is from other practical reasons.) Question&Answers:os...

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

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c++ - Is pass-by-value a reasonable default in C++11?

In traditional C++, passing by value into functions and methods is slow for large objects, and is generally frowned ... objects? What's the new best practice? Question&Answers:os...

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

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Does python have an equivalent to Java Class.forName()?

I have the need to take a string argument and create an object of the class named in that string in Python ... the question. getattr() works great. Thanks much. Question&Answers:os...

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

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c# - Create instance of generic type whose constructor requires a parameter?

If BaseFruit has a constructor that accepts an int weight, can I instantiate a piece of fruit in a generic method ... but I can't decide between the other two. Question&Answers:os...

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

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Android: How to auto-restart an application after it has been "force closed"?

In an Android application, we usually got the "Force Closed" error if we didn't handle the exceptions ... Is there any specific permission used for this? Question&Answers:os...

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

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css - How to make a floated div 100% height of its parent?

Here is the HTML: <div id="outer"> <div id="inner"></div> Test </div> And here is the CSS: #inner { ... force it to be 100% of the height of the parent div? Question&Answers:os...

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

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c# - Call one constructor from another

I have two constructors which feed values to readonly fields. public class Sample { public Sample(string ... one constructor from another. Any ideas? Question&Answers:os...

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

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1 answer

c# - What does a lock statement do under the hood?

I see that for using objects which are not thread safe we wrap the code with a lock like this: private ... is the performance impact because of using locks? Question&Answers:os...

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

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python - How can I find script's directory?

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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Parsing huge logfiles in Node.js - read in line-by-line

I need to do some parsing of large (5-10 Gb)logfiles in Javascript/Node.js (I'm using Cube). The logline ... amounts of text data in Node.js? Cheers, Victor Question&Answers:os...

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

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c# - What's the difference between Task.Start/Wait and Async/Await?

I may be missing something but what is the difference between doing: public void MyMethod() { Task t = ... DoSomethingThatTakesTime() { Thread.Sleep(10000); } Question&Answers:os...

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

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185 views

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Python creating a dictionary of lists

I want to create a dictionary whose values are lists. For example: { 1: ['1'], 2: ['1','2'], 3: ['2' ... if I don't know every key when I first create the list? Question&Answers:os...

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

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318 views

1 answer

sorting - How to sort an array in descending order in Ruby

I have an array of hashes: [ { :foo => 'foo', :bar => 2 }, { :foo => 'foo', :bar => 3 }, { ... |h| -h[:bar] } But that negative sign does not seem appropriate. Question&Answers:os...

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

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157 views

1 answer

How to split a string literal across multiple lines in C / Objective-C?

I have a pretty long sqlite query: const char *sql_query = "SELECT statuses.word_id FROM lang1_words, statuses ... way to write queries in multiple lines? Question&Answers:os...

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

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302 views

1 answer

Extracting the last n characters from a string in R

How can I get the last n characters from a string in R? Is there a function like SQL's RIGHT? Question&Answers:os...

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

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343 views

1 answer

powershell - redirecting test-path output to text file

The txt file is just a bunch of UNC paths, i am trying to get a list of UNC paths from this text file put into ... | Out-File -FilePath c:emp1.txt -Append } } Question&Answers:os...

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

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414 views

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c# - System.UnauthorizedAccessException while running .exe under program files

Through WiX installer I installed my Windows application and folder is being created under c:ProgramFiles with . ... at System.IO.File.AppendText(System.String) Question&Answers:os...

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

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766 views

1 answer

Pygame already installed; however, python terminal says "No module named 'pygame' " (Ubuntu 20.04.1)

I'm using Ubuntu 20.04.1 LTS. I have installed pygame with sudo apt-get install python-pygame. However, when I ... Python version is 3.8.2. Thanks in advance! Question&Answers:os...

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

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419 views

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psql - PostgreSQL "DESCRIBE TABLE"

How do you perform the equivalent of Oracle's DESCRIBE TABLE in PostgreSQL (using the psql command)? Question&Answers:os...

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

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1 answer

How to make a SIMPLE C++ Makefile

We are required to use a Makefile to pull everything together for our project, but our professor never showed ... that creates an executable called a3a.exe? Question&Answers:os...

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

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186 views

1 answer

How do I check in SQLite whether a table exists?

How do I, reliably, check in SQLite, whether a particular user table exists? I am not asking for unreliable ... or something? Or does my approach make sense? Question&Answers:os...

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

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66 views

1 answer

java - What is the difference between Set and List?

What is the fundamental difference between the Set<E> and List<E> interfaces? Question&Answers:os...

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

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200 views

1 answer

How can you debug a CORS request with cURL?

How can you debug CORS requests using cURL? So far I couldn't find any way to "simulate" the preflight request . Question&Answers:os...

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

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