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algorithm - Finding out nth fibonacci number for very large 'n'

I was wondering about how can one find the nth term of fibonacci sequence for a very large value of n say, ... so just like we have for finding prime numbers? Question&Answers:os...

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

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191 views

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performance - Storing Documents as Blobs in a Database - Any disadvantages?

The requirements for my document management system were: Must be secure from theft by simple copying of directories, ... well. The environment is Multi-user. Question&Answers:os...

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

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Send and Receive a file in socket programming in Linux with C/C++ (GCC/G++)

I would like to implement a client-server architecture running on Linux using sockets and C/C++ language that ... easy? Could anyone please provide an example? Question&Answers:os...

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

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python - Reload Flask app when template file changes

By default, when running Flask application using the built-in server (Flask.run), it monitors its Python files and ... used - and it works like a charm. Question&Answers:os...

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

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list - What is Haskell's Stream Fusion

What is Haskell's Stream Fusion and how do I use it? Question&Answers:os...

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

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104 views

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Unique ID of Android device

I want some unique ID of the Android device. I've tried it with the following code String ts = Context.TELEPHONY_SERVICE ... do I get an unique ID in that case? Question&Answers:os...

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

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c++ - Template template parameters

It seems understanding template template parameters will kill me :(, Let me explain what misconception I made in ... class Z is a templated parameter itself. Question&Answers:os...

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

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Java: random long number in 0 <= x < n range

Random class has a method to generate random int in a given range. For example: Random r = new Random(); int x ... (), but it doesn't allow to set range. Question&Answers:os...

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

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970 views

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cryptography - Secure random numbers in javascript?

How do I generate cryptographically secure random numbers in javascript? Question&Answers:os...

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

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How to convert char to integer in C?

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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600 views

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html - StaleElementReferenceException on Python Selenium

I am getting the following error while using Selenium in python: selenium.common.exceptions.StaleElementReferenceException: Message: ... I can try to fix this? Question&Answers:os...

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

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202 views

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python - Execute a function after Flask returns response

I have some code that needs to execute after Flask returns a response. I don't think it's complex ... in Flask Flask end response and continue processing Question&Answers:os...

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

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348 views

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json - ASP.net MVC returning JSONP

I am looking to return some JSON across domains and I understand that the way to do this is through JSONP rather ... = contentEncoding }; } Works like a charm. 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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Forcing garbage collection to run in R with the gc() command

Periodically I program sloppily. Ok, I program sloppily all the time, but sometimes that catches up with me ... in order to ensure maximum memory availability? Question&Answers:os...

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

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What does the ELIFECYCLE Node.js error mean?

What does ELIFECYCLE mean? Here's my app code: https://gist.github.com/samholmes/388ca4552c5936b52c5d When I run ... I getting the error in my application code? Question&Answers:os...

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

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726 views

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ios - first and last day of the current month in swift

I'm trying to get the first and last day of the month in swift. So far I have the following: let dateFormatter ... it has to take into account leap years etc. Question&Answers:os...

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

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267 views

1 answer

c - How to list physical disks?

How to list physical disks in Windows? In order to obtain a list of "\\.PhysicalDrive0" available. Question&Answers:os...

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

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465 views

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r - Error: package or namespace load failed for ggplot2 and for data.table

I am not able to open install the ggplot2 and data.table packages. It gives me the following error (example for ggplot2) ... = TRUE) I am not sure what's wrong Question&Answers:os...

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

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710 views

1 answer

google signIn not working in release mode apk android

In release mode, my google sign-in is not working, but it works fine in debug mode. I got a similar question ... is coming false - How can this be fixed? Question&Answers:os...

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

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995 views

1 answer

javascript - GetElementByID - Multiple IDs

doStuff(document.getElementById("myCircle1" "myCircle2" "myCircle3" "myCircle4")); This doesn't work, so do I need a comma or semi-colon to make this work? Question&Answers:os...

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

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309 views

1 answer

Use php to set cron jobs in Windows

I am looking for a way to set cron job using PHP. All I would like to do is run a PHP script at a ... bat using php instead of using os? Thank you Thank you Question&Answers:os...

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

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994 views

1 answer

pip - Why can I not create a wheel in python?

Here are the commands I am running: $ python setup.py bdist_wheel usage: setup.py [global_opts] cmd1 [cmd1_opts] [ ... figure out why this wouldn't be working. Question&Answers:os...

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

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2.2k views

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flutter - Programmatically scrolling to the end of a ListView

I have a scrollable ListView where the number of items can change dynamically. Whenever a new item is added ... of items that fit within the ListView viewport. Question&Answers:os...

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

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371 views

1 answer

http - Python urllib2 with keep alive

How can I make a "keep alive" HTTP request using Python's urllib2? Question&Answers:os...

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

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271 views

1 answer

oop - Properties of Javascript function objects

I have a JavaScript function object as; var addNum = function(num1, num2) { return num1 + num2; } Now if I ... for divide() Please help me understand the same. Question&Answers:os...

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

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160 views

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css - How to dynamically add a class to manual class names?

I need to add a dynamic class to a list of regular classes, but have no idea how (I'm using babel), something like ... .state.something}"> ... </div> Any ideas? Question&Answers:os...

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

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160 views

1 answer

PHP append one array to another (not array_push or +)

How to append one array to another without comparing their keys? $a = array( 'a', 'b' ); $b = array( 'c', 'd' ... way: foreach ( $b AS $var ) $a[] = $var; Question&Answers:os...

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

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78 views

1 answer

Handling a Menu Item Click Event - Android

I want to create an intent that starts a new activity once a Menu Item is clicked, but I'm not sure ... break; } return super.onOptionsItemSelected(item); } } Question&Answers:os...

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

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