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regex - Why does strsplit use positive lookahead and lookbehind assertion matches differently?

Common sense and a sanity-check using gregexpr() indicate that the look-behind and look-ahead assertions below should ... to identify a remedy, addressing (Q2). Question&Answers:os...

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

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Secure FTP using Windows batch script

I currently have batch scripts on different servers that transfer a csv file to an FTP server at a different ... how would my script be updated? Thanks. Question&Answers:os...

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

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loops - How to make a jquery infinite animation?

I'm trying to implement a jQuery function with an infinite loop to animate the body background with 3 colours. I cannot think of ... 500); }); }); }); Any idea? Question&Answers:os...

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

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blender - Three.js Collada - What's the proper way to dispose() and release memory (garbage collection)?

I've successfully imported a .dae scene via ColladaLoader. The problem is, I need to switch between several .dae ... scene, camera ); controls.update(); } Question&Answers:os...

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

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gnu - What delimiters can you use in sed?

We normally see people complaining about the unknown option to s' error in sed when they want to use a ... haha" hbhb Is there any specification for this? Question&Answers:os...

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

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events - How do I detect a page refresh using jquery?

How might I capture the page reload event? I have a messaging system which loses all its input when the ... detect when the page has been refreshed/reloaded. Question&Answers:os...

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

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ruby on rails 3.1 - PostgreSQL -must appear in the GROUP BY clause or be used in an aggregate function

I am getting this error in the pg production mode, but its working fine in sqlite3 development mode. ... => current_user.Company).group(:user_id).all Question&Answers:os...

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

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python - Use subprocess to send a password

I'm attempting to use the python subprocess module to log in to a secure ftp site and then grab a file. ... or any other stdlib? What am I forgetting above? Question&Answers:os...

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

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multithreading - Java Wait for thread to finish

I have a thread downloading data and I want to wait until the download is finished before I load the data ... to handle the workflow of the download processes. Question&Answers:os...

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

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angular - Use component in itself recursively to create a tree

Do you know is it possible to use component in itself? If yes,where to read about it? I have next situation: have ... etc. So it better to use nesting,but how? Question&Answers:os...

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

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r - The condition has length > 1 and only the first element will be used

I have a dataframe, trip: > head(trip.mutations) Ref.y Variant.y 1 T C 2 G C 3 A C 4 T C 5 C A 6 G ... what's wrong here? Do I need || instead of | perhaps? Question&Answers:os...

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

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c# - Recursive Hierarchy - Recursive Query using Linq

I am using Entity Framework (version 6) to map to a recursive hierarchy and it maps nicely. My ... implementation, that will recursively get all children? Question&Answers:os...

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

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ios - Black bars on launch screen on iPhone5 (and iPhone6)

When iPhone 5 first came out we had to go through the silliness of adding a [email protected] to the project to get ... in a new app created with Xcode 6 GM. Question&Answers:os...

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

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matlab - On shape-agnostic slicing of ndarrays

In this post, I'm using the term slice to refer to a subarray B_i of an n-dimensional array A such that ... achieve the same result (in a shape-agnostic way)? Question&Answers:os...

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

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How to store unicode in MySQL?

How do I store Unicode in free edition of MySQL? There doesn't seem to be nvarchar type as in SQL Server. Is ... I tried using text but that too is not working. Question&Answers:os...

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

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c# - How to mock non virtual methods?

[TestMethod] public void TestMethod1() { var mock = new Mock<EmailService>(); mock.Setup(x => x.SendEmail()). ... Is there any way to mock non virtual methods? Question&Answers:os...

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

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Convert Epoch seconds to date and time format in Java

I have seconds since 1970 january 1 UTC (Epoch time). 1320105600 I need to convert that seconds into date and time in ... ,2011 5:00,AM How can I achieve this? Question&Answers:os...

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

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1 answer

java - How to flatten 2D array to 1D array?

How can I flatten the 2 dimensions array int originalArray[][] to 1 dimension array? int a [] = {1,2,6,7,2}; int b ... originalArray [][] = new int[][]{a,b,c}; Question&Answers:os...

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

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263 views

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javascript - Can't set innerHTML on tbody in IE

I have a table like this: <table> <thead> <tr> <th colspan="1">a</th> <th colspan="3">b</th> < ... . Can anyone help me with a simple workaround for this issue? Question&Answers:os...

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

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Implement graph-like data structure in Rust

I have a data structure which can be represented as a unidirectional graph between some structs linked with link ... the best way to solve this problem. Question&Answers:os...

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

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376 views

1 answer

How to embed .ttf fonts in JavaFx 2.2?

Firstly, I am quite a new guy in coding. I need to embed a font in my java FXML-based app and don't know ... u21. Any ideas for a correct way to embed fonts? Question&Answers:os...

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

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230 views

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sql - Subqueries with EXISTS vs IN - MySQL

Below two queries are subqueries. Both are the same and both works fine for me. But the problem is Method 1 query takes about ... TYPE = 3 AND COUNT(*) > 0 ) ) Question&Answers:os...

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

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293 views

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c# - What is the effect of AsEnumerable() on a LINQ Entity?

Reading the questions here and here has given me some insight into the situation, and it seems like using the ... = p.OCR, ElectorName = p.ElectorName }; Question&Answers:os...

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

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252 views

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WPF horizontal DataGrid

I would like to have a WPF DataGrid with a horizontal orientation, does anyone know a solution? Question&Answers:os...

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

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382 views

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Algorithm to convert an IEEE 754 double to a string?

Many programming languages that use IEEE 754 doubles provide a library function to convert those doubles ... programmer-chosen precision limitations? Thanks! Question&Answers:os...

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

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627 views

1 answer

python - Most efficient property to hash for numpy array

I need to be able to store a numpy array in a dict for caching purposes. Hash speed is important. The ... setting the writeable flag actually makes it slower. Question&Answers:os...

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

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196 views

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java.lang.StackOverflowError while using a RegEx to Parse big strings

This is my Regex ((?:(?:'[^']*')|[^;])*)[;] It tokenizes a string on semicolons. For example, Hello world; ... :4227) How is this caused and how can I solve it? 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

Sending trait objects between threads in Rust

I'd like to send a trait object between threads, but can't figure out if it's possible. It seems like it ... under way that may allow for this in the future? Question&Answers:os...

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

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