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604 views

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C++ cout hex values?

I want to do: int a = 255; cout << a; and have it show FF in the output, how would I do this? Question&Answers:os...

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

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342 views

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python - Django: ImproperlyConfigured: The SECRET_KEY setting must not be empty

I am trying to set up multiple setting files (development, production, ..) that include some base settings. ... creates some weird circular stuff and game over. Question&Answers:os...

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

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617 views

1 answer

substring - Making sure PHP substr finishes on a word not a character

I know how to use the substr function but this will happy end a string halfway through a word. I want the string ... ... echo substr("$body",0,260); Cheers Question&Answers:os...

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

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736 views

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utf 8 - git, msysgit, accents, utf-8, the definitive answers

I've read in some places that there are problems with git (or just msysgit?) and character encoding - I believe it' ... to be able to point people to it... Question&Answers:os...

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

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200 views

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java - How to get frequency from fft result?

I have recorded an array[1024] of data from my mic on my Android phone, passed it through a 1D forward DFT of ... 5th fret) of my guitar (at roughly 440Hz) . Question&Answers:os...

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

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dictionary - A Regex that will never be matched by anything

This might sound like a stupid question, but I had a long talk with some of my fellow developers and it sounded ... reason for this "not a real question"... Question&Answers:os...

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

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372 views

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c# - calculating the difference in months between two dates

In C#/.NET TimeSpan has TotalDays, TotalMinutes, etc. but I can't figure out a formula for total months difference. ... 6th, 1 month. On Dec 6th, 2 months Question&Answers:os...

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

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232 views

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multithreading - When would you call java's thread.run() instead of thread.start()?

When would you call Java's thread.run() instead of thread.start()? Question&Answers:os...

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

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209 views

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java - Reliable File.renameTo() alternative on Windows?

Java's File.renameTo() is problematic, especially on Windows, it seems. As the API documentation says, Many ... more things into account; see this answer. Question&Answers:os...

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

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627 views

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media player - Android MediaPlayer error (1, -2147483648)

I have two different videos which I'm trying to load into a VideoView using videoView.setVideoURI(Uri.parse(url)) ... direction as to use which codec? Thanks. Question&Answers:os...

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

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283 views

1 answer

c - How does fread really work?

The declaration of fread is as following: size_t fread(void *ptr, size_t size, size_t nmemb, FILE *stream); The ... Will it read 1000 bytes at once each time? Question&Answers:os...

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

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python - How to generate a random number with a specific amount of digits?

Let's say I need a 3-digit number, so it would be something like: >>> random(3) 563 or >>> random(5) 26748 >> random(2) 56 Question&Answers:os...

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

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281 views

1 answer

Using ASP.NET routing to serve static files

Can ASP.Net routing (not MVC) be used to serve static files? Say I want to route http://domain.tld/static/ ... I approach routing of static files in ASP.NET? Question&Answers:os...

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

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317 views

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c++ - Initializing fields in constructor - initializer list vs constructor body

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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233 views

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jquery - How to pass parameters in $ajax POST?

I have followed the tutorial as stated in this link. In the code below for some reason the data is not appended to the ... function () { alert("error"); } }); Question&Answers:os...

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

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222 views

1 answer

c# - ASP.NET Core 1.0 on IIS error 502.5

I just updated my server (Windows 2012R2) to .Net Core 1.0 RTM Windows Hosting pack from the previous .Net Core 1 ... the cause of error when it's not logged?? Question&Answers:os...

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

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169 views

1 answer

How to limit concurrency with Python asyncio?

Let's assume we have a bunch of links to download and each of the link may take a different amount of ... care of common async patterns? (Something like async) Question&Answers:os...

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

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238 views

1 answer

How to test equality of Swift enums with associated values

I want to test the equality of two Swift enum values. For example: enum SimpleToken { case Name(String) case ... it automatically, much like Scala and Ocaml do. Question&Answers:os...

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

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310 views

1 answer

"unrecognized selector sent to instance" error in Objective-C

I created a button and added an action for it, but as soon as it invoked, I got this error: -[NSCFDictionary ... numberButtonClick:(id)sender{ NSLog(@"---"); } Question&Answers:os...

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

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96 views

1 answer

AngularJS - pass function to directive

I have a example angularJS <div ng-controller="testCtrl"> <test color1="color1" updateFn="updateFn()"></test> ... appear, but nothing show. Can anyone help me? Question&Answers:os...

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

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230 views

1 answer

android - How to fix: "HAX is not working and emulator runs in emulation mode"

Question is I get "HAX is not working and emulator runs in emulation mode", is this related to Intel x86 ... is not working and emulator runs in emulation mode Question&Answers:os...

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

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194 views

1 answer

Python: best practice and securest way to connect to MySQL and execute queries

What is the safest way to run queries on MySQL? I am aware of the dangers involved with MySQL ... database through python without risking MySQL injection? Question&Answers:os...

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

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151 views

1 answer

multithreading - what is the correct way to implement a QThread... (example please...)

The Qt documentation for QThread says to create a class from QThread, and to implement the run method. Below is taken ... example of how to do threading in Qt. Question&Answers:os...

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

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1.2k views

1 answer

date - How can I parse a time string containing milliseconds in it with python?

I am able to parse strings containing date/time with time.strptime >>> import time >>> time.strptime('30/03 ... ():]) ValueError: unconverted data remains: .123 Question&Answers:os...

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

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1.1k views

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export to csv - How to create and download a csv file from php script?

I am a novice programmer and I searched a lot about my question but couldn't find a helpful solution or tutorial about this ... ] => BBQ Joint [url] => ) ) Question&Answers:os...

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

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120 views

1 answer

c# - Access to Modified Closure (2)

This is an extension of question from Access to Modified Closure. I just want to verify if the following is ... the list is run through more than once? Question&Answers:os...

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

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433 views

1 answer

python - How does perspective transformation work in PIL?

PIL's Image.transform has a perspective-mode which requires an 8-tuple of data but I can't figure out how to ... degrees to that tuple. Can anyone explain it? Question&Answers:os...

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

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277 views

1 answer

Android TextWatcher.afterTextChanged vs TextWatcher.onTextChanged

Under what circumstances should I use afterTextChanged instead of onTextChanged and vice versa? Question&Answers:os...

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

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