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python - Replacing instances of a character in a string

This simple code that simply tries to replace semicolons (at i-specified postions) by colons does not work: for i in ... 'm not able to use an index with it. Question&Answers:os...

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

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How many characters can a Java String have?

I'm trying The Next Palindrome problem from Sphere Online Judge (SPOJ) where I need to find a palindrome for a ... they allow for a String to be this long? Question&Answers:os...

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

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c - Why doesn't a+++++b work?

int main () { int a = 5,b = 2; printf("%d",a+++++b); return 0; } This code gives the following ... return 0; } What does the error mean in the first example? Question&Answers:os...

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

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c++ - Is it okay to inherit implementation from STL containers, rather than delegate?

I have a class that adapts std::vector to model a container of domain-specific objects. I want to expose most ... used // in conjunction with the collection. } Question&Answers:os...

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

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Java: Prefix/postfix of increment/decrement operators?

From the program below or here, why does the last call to System.out.println(i) print the value 7? class PrePostDemo { ... System.out.println(i); // "7" } } Question&Answers:os...

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

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lambda - Why filter() after flatMap() is "not completely" lazy in Java streams?

I have the following sample code: System.out.println( "Result: " + Stream.of(1, 2, 3) .filter(i ... first case. Any helpful information would be appreciated. Question&Answers:os...

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

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Why do browsers create vendor prefixes for CSS properties?

Maybe it's an obvious answer, but Why on earth would browsers decide to create their own vendor prefixes ... redundant to type three lines for one. Question&Answers:os...

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

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javascript - Why does the setInterval callback execute only once?

I have this counter I made but I want it to run forever, it's really simple, what am I doing wrong here? ... log("timer!") } window.setInterval(timer(), 1000) Question&Answers:os...

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

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css - Why bottom:0 doesn't work with position:sticky?

I'm trying to understand what css "sticky" does. I can get it to stick to the 'top' of its parent, but not to ... />222222<br/>222222<br/>222222<br/>222222<br/> Question&Answers:os...

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

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java - non resizable window border and positioning

If i create non-resizable JFrames, and windows Aero is enabled setLocation does not seem to take account of the window ... On: Aero Off: Aero On but resizable: Question&Answers:os...

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

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r - How to use Pivot_longer to reshape from wide-type data to long-type data with multiple variables

I would like to ask how to reshape the following dataframe from wide-type to long-type. The wide-type ... this data reshape without making 2 separate files. Question&Answers:os...

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

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language agnostic - Runtime vs. Compile time

What is the difference between run-time and compile-time? Question&Answers:os...

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

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Apache and Node.js on the Same Server

I want to use Node because it's swift, uses the same language I am using on the client side, and it's ... most favorable situation, and how do I implement that? Question&Answers:os...

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

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sql - Difference between JOIN and INNER JOIN

Both these joins will give me the same results: SELECT * FROM table JOIN otherTable ON table.ID = ... ? Does it differ between different SQL implementations? Question&Answers:os...

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

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c# - Algorithm to detect overlapping periods

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

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c - Why does the order of the loops affect performance when iterating over a 2D array?

Below are two programs that are almost identical except that I switched the i and j variables around. They both run in different ... j][i] = i + j; } } } Question&Answers:os...

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

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sql - How to speed up insertion performance in PostgreSQL

I am testing Postgres insertion performance. I have a table with one column with number as its data type. There is an ... 7 Pro on a machine with 5 GB RAM. Question&Answers:os...

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

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111 views

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Polymorphism in C++

AFAIK: C++ provides three different types of polymorphism. Virtual functions Function name overloading Operator ... many new passouts from their colleges. Question&Answers:os...

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

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110 views

1 answer

Excel to CSV with UTF8 encoding

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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html - How to force child div to be 100% of parent div's height without specifying parent's height?

I have a site with the following structure: <div id="header"></div> <div id="main"> <div id="navigation" ... div's height, no matter which page is loaded? 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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How to implement my very own URI scheme on Android

Say I want to define that an URI such as: myapp://path/to/what/i/want?d=This%20is%20a%20test must be ... or any torrent downloader program (torrent://). Question&Answers:os...

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

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307 views

1 answer

Android: Clear the back stack

In Android I have some activities, let's say A, B, C. In A, I use this code to open B: Intent intent = new ... I'm back in activity A. How can I avoid this? Question&Answers:os...

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

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339 views

1 answer

Is it better to use C void arguments "void foo(void)" or not "void foo()"?

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

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331 views

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rest - Spring MVC @PathVariable with dot (.) is getting truncated

This is continuation of question Spring MVC @PathVariable getting truncated Spring forum states that it has fixed(3.2 ... with dot (.) is getting truncated Question&Answers:os...

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

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special characters - What is the difference between and ?

How are and different? I think it has something to do with Unix vs. Windows vs. Mac, but I'm not sure ... different, and which to search for/match in regexes. Question&Answers:os...

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

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216 views

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javascript - Make header and footer files to be included in multiple html pages

I want to create common header and footer pages that are included on several html pages. I'd like to use ... a header and footer page within another html page. Question&Answers:os...

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

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889 views

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hyperlink - How to open link in a new tab in HTML?

I'm working on an HTML project, and I can't find out how to open a link in a new tab without JavaScript. I ... Any ideas how to make it open in a new one? Question&Answers:os...

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

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360 views

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rust - What is the difference between iter and into_iter?

I am doing the Rust by Example tutorial which has this code snippet: // Vec example let vec1 = vec![1, 2, 3 ... What is the use case/API for these two methods? Question&Answers:os...

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

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