# Tagged Questions

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549 views

### Algorithm to merge two sorted arrays with minimum number of comparisons

Given are two sorted arrays a, b of type T with size n and m. I am looking for an algorithm that merges the two arrays into a new array (of maximum size n+m). If you have a cheap comparison ...
241 views

### Algorithm to test file equivalence

I'm writing a program that needs to test if a file is equivalent to one or more other files. To accomplish this, every time we see a new file we stat the file and get the size. We use the size as a ...
94 views

### Comparing doubles [duplicate]

I need to compare to double variables like this if (distance <= radius) both distance and radius are doubles and I remember in class how to use epsilon comparisons for checking equality but how ...
237 views

### Is there any language-agnostic specification for “String Natural Sorting Order”

As I painfully try to find a good natural sorting algorithm written in JavaScript I then stumble upon a bunch of different implementations, & interesting blog posts & answers on Stack ...
122 views

### Finding metrics for development time in different languages [closed]

I'm trying to determine if a language I'm investigating (Groovy) is better for developing enterprise applications than our current language (Java). Specifically I'm trying to figure out if it will ...
110 views

### comparison of an unsigned variable to 0

When I execute the following loop : unsigned m; for( m = 10; m >= 0; --m ){ printf("%d\n",m); } the loop doesn't stop at m==0, it keeps executing interminably, so I thought that ...
175 views

### Comparing two software versions in C#

I´m working on a mod update checker for minecraft, but there is a big problem: The modders and online database that I´m using for update checks has no standard software versions e.g.: Local: ...
36 views

### How to develop a product compare page

I want to develop a product comparison page, where a user can compare 2 or 3 products. I was thinking about a 3 column list displaying every specification. But I want to highlight the differences. I ...
26k views

### How can Swift be so much faster than Objective-C in these comparisons?

Apple launched its new programming language Swift at WWDC14. In the presentation, they made some performance comparisons between Objective-C and Python. The following is a picture of one of their ...
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### How to (or should I) have one assert per test with object comparisons? [duplicate]

I've recently read The Art of Unit Testing by Roy Osherove which I found very useful for helping me establish how to define a good unit test. One key aspect of the guidelines Roy puts forward are to ...
131 views

### How to choose between different open-source libraries? [closed]

Recently, I found multiple GitHub repositories that would allow me to perform the same task. (In my case, assess the readability of text strings.) It made me wonder, what are the best practices for ...
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### Difference between MPL 2.0 and LGPL 2.1 (+static linking exception)? [duplicate]

Is there a difference between MPL 2.0 and LGPL 2.1 (+static linking exception)? If yes, what is it? As long as i understand the only difference between them is you can't use trademarks of ...
817 views

### Why is PHP's method of comparing different types bad?

I'm working on designing a new programming language and trying to decide how I will do variable comparisons. Along with many different types of languages, I've used PHP for years and personally had ...
738 views

### Shallow or deep equal, which one is idiomatic in Java?

I have a domain model in which I use a few aggregation relations, i.e. an object of class A contains zero or more objects of class B. I use Java for the implementation and I represent such an ...
474 views

### Which is the better: a <= b or a < b+1 [closed]

For loops are usually inclusice, exclusive, meaning that you start at the bottom, and stops when you reach, but don't to the top. In Python: for i in range(0,a): print(i) would print 0 through ...
193 views

### Importance of diffing and merging for design specifications documentation

The context of this question is choosing tools for writing design specifications for software projects. These documents will be written and maintained by architects and developers, I'm not talking ...
486 views

### Trying to understand the 2N lnN compares for quicksort

I was going through the analysis of quicksort in Sedgewick's Algorithms book. He creates the following recurrence relation for number of compares in quicksort while sorting an array of N distinct ...
114 views

### Special feautures of each of these languages that make them special [closed]

I interested about C++, C#, Java, Python, Ruby and Perl. All this languages are very popular and I believe that each one have something that make people to choose them. What is that special thing that ...
248 views

### Best practice to sort then reverse, or write “backwards” comparator?

I wrote a comparator for a custom class of mine and when I ran my code I realised the output of my list of these objects was in the reverse order as to what I wanted. It was "ascending" as opposed to ...
873 views

### Tricky compareTo, inheritance, easy to extend - Java

Let's say we have 4 classes A, B, C, D where: A is a superclass of both B and C and C is a superclass of D. I suppose, in a diagram, it should look like this: A / \ B C \ D ...
1k views

### Scala as a language for Generic Programming

In the paper “An Extended Comparative Study of Language Support for Generic Programming” by Garcia et al. an interesting comparison of programming languages features for generic programming is given: ...
484 views

### Are Scrum and XP comparable things or are they used for different things

Are Scrum and XP comparable things or are they used for different things? what is the main features of each of them? how do they overlap? I've been reading about both XP and Scrum over the past weeks ...
1k views

### Rails vs. Drupal [closed]

I was querying indeed.com/salary to investigate general market trends. When comparing ruby on rails with drupal, you would observe a substantial difference between these two. I'm not sure if the data ...
194 views

### I need some help creating a non-binary tree (or some other data structure that will better solve my problem)

I have about ten lists of numbers and some strings. Each list has about <= 30K lines. Each line on a list has a distinct number. I need to build an efficient way of finding all the lines in each ...
684 views

### How representative is Ohloh? [closed]

My colleague recently pointed me to Ohloh, a website providing statistics on FOSS based on versioning repositories. It's quite a fun procrastination tool, e.g. to compare programming languages by ...
841 views

### When to use identity comparison instead of equals?

I wonder why would anybody want to use identity comparison for fields in equals, like here (Java syntax): class C { private A a; public boolean equals(Object other) { // standard ...
462 views

### What do you call “X <= \$foo <= Y” comparison?

While writing a Perl statement like if ( \$foo >= X && \$foo <= Y ) yet again, I wondered why many programming languages do not support the more comfortable form if ( X <= \$foo <= Y ...
417 views

### Efficient way to compare scene-graph trees

I'm designing a scene graph system, where it is required to compare two trees. The trees are populated with individual objects, each with varied number of children; and they have a root. Eg: Parent: ...
187 views

### Custom graph comparison?

I'm trying to compare two graphs using hash value ( i.e, at the time of comparison, try to avoid traversing the graph ) Is there a way to make a function such that the hash values compared can also ...
1k views

### Is it possible to check that MS word file is hand written or auto generated by using some converter?

I got one project with some requirements. Basically my client provide data entry work. In that he converts image files(scan copy of articles, forms etc) to document file (MS word) by typing ...
1k views

### Using PHP's ternary operator with only two arguments

I was recently reviewing some of my code and noticed that in a fit of absent-mindedness, I'd left a structure like the following: \$guid = empty(\$subscription->guid) ? : \$subscription->guid; ...
3k views

### Is there any reason why most programming languages don't have '!>' (not greater than) and '!<' (not less than) operators?

I wonder if there is any reason - or if it is just an accident of history - that there are no !> and !< operators in most programming languages? a >= b (a greater OR equals b) could be ...
3k views

### Java Web Frameworks (JSF vs Wicket) Third-party component suites in Wicket?

A presentation linked in an answer here demonstrated a comparison of several web development frameworks. It was a good comparison but caused me a little worry based on the technology stack that I ...
835 views

### Pros and cons of using Grails compared to pure Groovy

Say, you (by you I mean an abstract guy, any guy in your team) have experience of writing and building java web apps, know about filters, servlet mappings and so on, and so on. Also, let us assume ...
2k views

### For what types of applications is Python a bad choice?

I just started learning Python, and I'd like to get some more context on the language. I realize that, in many cases, Python is a slow language relative to C or C++. Thus, Python is probably not the ...
427 views

I'm in the very early stages of writing an application to mine through Twitter data looking for certain types of information. I've been using Twitterizer, which I have found effective in downloading ...
432 views

### Why don't many code review tools seem to be syntax aware or provide more in-depth analysis of changes?

Why don't many code review tools seem to be syntax aware or provide more in-depth analysis of changes? Is it simply too hard to do? I find this to be a major hole of most programmer's toolkits. From ...
6k views

### How is Node.js different from other server-side frameworks?

I've noticed that Node.js has become very popular, and I've seen several instances of people doing small-scale projects in it. I've also looked at pros and cons lists to get an idea of what Node.js ...
1k views

### What are the advantages and disadvantages of the various git modes available for emacs?

I just started using git, and because I tend to live in emacs, I want to use one of the emacs integration packages. Looking at this list, I see that there are a lot of packages available, but the ...
610 views

### Are there any empirical studies on the effect of different languages on software quality?

The proponents of functional programming languages assert that functional programming makes it easier to reason about code. Those in favor of statically typed languages say that their compilers catch ...
442 views

### Is Free Pascal just an open source, multi-platform clone of Turbo Pascal & Delphi?

Does Free Pascal introduce any significant language features over Turbo Pascal & then Delphi, or does it just introduce the Turbo Pascal & Delphi flavors of Pascal to more platforms?
3k views

### ado .net connected and disconnected classes?

Pros and cons and Usage I have been preparing myself for an interview for the post of software developer in .net platform. For database related issues, I have to to a point about the connected ans ...
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### Is there certain payoffs between working for a company in the IT industry, and working for the IT department of a company in some other industry? [closed]

I am a software engineering student and am in the process of making some career choices. I need to understand what the major differences are in the above two scenario. Anyone with experience of both, ...
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### Comparing features in a asp.net web application using different database methodologies [closed]

I have a webstore which sells components (it is a academic project) which looks like this. I have developed the same web application using following database methodologies: MS Sql Server with Stored ...
1k views

### Better to inject IoC container or use a Service Locator pattern? [duplicate]

I have an IoC container (If you want a specific one to look at, it's very similar to Unity) and I'm working on how I want to integrate it into my application. My overall goal for this exercise is to ...
2k views

### How do you choose to use a specific programming language? [closed]

I was having a small talk between teammates about how you choose a programming language for use in a project which lead me to think that there are many criteria to choose one in the beginning of a ...
3k views

### Do Fortran compilers really generate faster code than C compilers?

When I was studying in the university I often heard the idea that Fortran compilers produced faster code than C compilers for an equivalent program. The key reasoning went like this: a Fortran ...
2k views

### c++ write own xml parser vs using tinyxml

I am currently in a task to generate an XML file for an srt text file containing timestamps and corresponding text. To generate an exe file which accepts file name input and outputs the relevant XML ...