I want to identify my archive whether it is zip or rar. But the problem I get runtime error before I can validate my file. I want to create custom notification: public class ZipValidator { public...

I was thinking along the lines of using typeid() but I don't know how to ask if that type is a subclass of another class (which, by the way, is abstract)

Given some Random.exe on Windows, how can I determine its CPU architecture eg Intel/ARM, and its bitness eg 32 or 64. Is there a property in File Explorer, some other tool, or programatic meth...

Why is it a bad idea to have a ID in the URL in terms of SEO? How does this URL http://example.com/user/1234 hurt SEO? Can someone give me a practical example where search engine rankings are wors...

I am currently using PIL. from PIL import Image try: im = Image.open(filename) # do stuff except IOError: # filename not an image file However, while this sufficiently covers most cases, some ...

We have a service where we literally give away free money. Naturally said service is ripe for abuse. To defend against this we do the following: log ip address use unique email addresses (only 1...

I have a folder full of files and they don't have an extension. How can I check file types? I want to check the file type and change the filename accordingly. Let's assume a function filetype...

I have data in the following format: Data <- data.frame( Names = c("Person A", "Person B","Person F", "Person G", "Person F", "Person G", "Person Q", "Person R"), Time_Stamp = c("2013-08-01 ...

(Final edit: The code I ended up putting together that works is way down below, it's probably the final reply in this thread. :-) ) I'm trying to write generic copy-and-paste code that will work i...

I use Maven to build my web app projects, when I add some dependent library to the pom file, it again adds some more dependent jars to the project recursively. Is there a way to find out or restric...

My nginx config is - proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header X-Real-IP $remote_addr; set_real_ip_from 55.55.55.1; real_ip_header X-Forwarded-For; real_i...

Can we use the FingerprintManager in Android M (API 22) to identify (along with authorize) the user? For example, there are two finger prints registered in the device, one for user A and one for u...

I have different providers which passes me an excel with different cities, in each city they use some special code for their operations and more data useful to my business. The problem is that I h...

In my application there is language detection. Languages have some identification code like en for English, pt for Portuguese, fr for French, etc. Is there a language code for the case when a lang...

I am reading data from multiple identical USB-serial adapters under Ubuntu 10.1. On occasion, their /dev/tty path changes (eg if other USB devices are connected on startup). I need a way of repea...

I am attempting to identify a mobile device on a LAN using Nmap, more specifically an Android smartphone. Both my laptop and the target (android smartphone) are connected to the same access p...

Given an executable that is compiled from C to run on Solaris, is it possible to determine which compiler was used to compile the associated incomplete executable? I can't see anything when using ...

I've read this question: What's the difference between identifying and non-identifying relationships? But I'm still not too sure... What I have is three tables. Users Objects Pictures A us...

I'm working on a client-server Android application and trying to figure out how to identify different phones/users to the server unambiguously. My first attempt would be to use the phone number on ...

I'm developing a script that needs the package managers of a System. I've identified Fedora, Gentoo, and Arch Linux using the os.uname() function. However, the (open)SUSE uname results is the same...

how can I identify the presence or absence of regular stripes of different colors, but ranging from very very very very light pink to black inside of a scanned image (bitmap 200x200dpi 24-bit). Car...

I want to uniquely identify a machine in C. The following are sources which have serial numbers, but they aren't guaranteed to be unique, or present (like a removable HDD or network card). CPU: ...

Is there a way to generate an unique Hardware dependent Identification key in Ruby...?

Sorry I couldn't find the best heading for this question. Following is my requirement. I a working on a project which deals which large amount of money transactions to different account. The syste...

I know this is a big one. In fact, it may be used for some SO community wiki. Anyways, I am running a website that DOES NOT use explicit authentication of users. It's public as in open to everybod...