Difference between \\n and \\r?

Difference between \\n and \\r?

What’s the difference between \n (newline) and \r (carriage return)?In particular, are there any practical differences between \n and \r? Are there places where one should be used instead of the other? 1:In terms of ascii code, it's 3 --

How do I protect Python code?

How do I protect Python code?

I am developing a piece of software in Python that will be distributed to my employer's customers. My employer wants to limit the usage of the software with a time restricted license file.If we distribute the .py files or even .pyc files it

Remove HTML tags from a String

Remove HTML tags from a String

Is there a good way to remove HTML from a Java string? A simple regex like replaceAll("\\<.*?>","") will work, but things like & wont be converted correctly and non-HTML between the two angle brackets will be removed (i.e. the .*? in

Learning to write a compiler [closed]

Learning to write a compiler [closed]

Preferred languages: C/C++, Java, and Ruby.I am looking for some helpful books/tutorials on how to write your own compiler simply for educational purposes. I am most familiar with C/C++, Java, and Ruby, so I prefer resources that involve on

&&= and ||= operators [duplicate]

&&= and ||= operators [duplicate]

Possible Duplicates: Why doesnt Java have compound assignment versions of the conditional-and and conditional-or operators? (&&=, ||=) Why does a “&&=” Operator not exist? Today at work I wrote the following LOC (the real ide

Reloading model in laravel

Reloading model in laravel

In some of my tests, I have a user model I have created and I run some methods that need to save certain attributes. In rails, I would typically call something like user.reload which would repopulate the attributes from the database.Is ther

How do I create a CSV file using Perl?

How do I create a CSV file using Perl?

I want to create a CSV file using Perl and write some data to it. Is there any way to do that? 1:You could use Class:CSV.use Class::CSV;my $csv = Class::CSV->new( fields => [qw/userid username/]);$csv->add_line([2063, 'testuser'

What is meaning of a pointer to a constant function?

What is meaning of a pointer to a constant function?

Pointers can be declared as pointing to mutable (non-const) data or pointer to constant data.Pointers can be defined to point to a function.My coworkers and I were discussing the use of "const" with pointers and the question came up regardi

How to reverse lines of a text file?

How to reverse lines of a text file?

I'm writing a small shell script that needs to reverse the lines of a text file. Is there a standard filter command to do this sort of thing?My specific application is that I'm getting a list of Git commit identifiers, and I want to process

Is code written in Hack faster than code written in PHP on HHVM?

Is code written in Hack faster than code written in PHP on HHVM?

Can we expect a speed gain by transitioning from PHP to Hack on HHVM?I'm thinking of the strongly typed parameters / return types, in particular scalars, does that allow HHVM to do a better job at compiling the code to native code, or is th

WCF Error : Manual addressing is enabled on this factory, so all messages sent must be pre-addressed

WCF Error : Manual addressing is enabled on this factory, so all messages sent must be pre-addressed

I've got a hosted WCF service that I created a custom factory for, so that this would work with multiple host headers:/// /// Required for hosting where multiple host headers are present/// public class MultipleHostServiceFactory : ServiceH

PHP date calculation

PHP date calculation

What is the best (date format independent way) in PHP to calculate difference in days between two dates in specified format.I tried the following function:function get_date_offset($start_date, $end_date){ $start_time = strtotime($start_dat

How to change color of marker in Google Map?

How to change color of marker in Google Map?

I won't use GIcon to change for the marker.Any other ways to change color of marker??? 1:Nope, if you wan't to customize your marker, you will need to use GIcon.You can find a whole lot of free markers at the Google Maps Icons Project.

BitBlt code not working

BitBlt code not working

I'm trying to use this code to draw a Bitmap directly onto a PictureBox:Bitmap bmp = (Bitmap)Bitmap.FromFile(@"C:\Users\Ken\Desktop\Load2.bmp");Graphics grDest = Graphics.FromHwnd(pictureBox1.Handle);Graphics grSrc = Graphics.FromImage(bmp)

WinForms UI responsiveness when dealing with “heavy” data

WinForms UI responsiveness when dealing with “heavy” data

I'm modifying a windows form to allow data to be loaded in the background while the UI remains responsive. The data takes noticeable time to both retrieve and bind. Ideally, I would do both in the background, but there is some ambiguity a

How to print_r $_POST array?

How to print_r $_POST array?

I have following table.And test.php file $value) { echo "".$key.""; echo "".$value.""; echo ""; }?>But it is only returning this: 0Array What I'm doing wrong? 1: $value) { echo ''.$key.''; foreach($value as $k => $v) { ech

3D CartoPy similar to Matplotlib-Basemap

3D CartoPy similar to Matplotlib-Basemap

I'm new to Python with a question about Cartopy being able to be used in a 3D plot. Below is an example using matplotlibBasemap.import matplotlib.pyplot as pltfrom mpl_toolkits.mplot3d import Axes3Dfrom mpl_toolkits.basemap import Basemapm

What is the overhead in splitting a for-loop into multiple for-loops, if the total work inside is th

What is the overhead in splitting a for-loop into multiple for-loops, if the total work inside is th

This question already has an answer here: Why are elementwise additions much faster in separate loops than in a combined loop? 9 answers Pe

How do I fade in /out a rectangle or text?

How do I fade in /out a rectangle or text?

I want to achieve the effect of fade in / fade out the rect or text. I call CGContextFillRect or CGContextShowText in my UIVIew's drawRect: method. I wonder if there is a way to achieve the animation without using UIView' support(i.e. [UIVi

exc_bad_access in Facebook sdk login Xcode 8 beta

exc_bad_access in Facebook sdk login Xcode 8 beta

recently I started adding my application IOS 10 features while I encountered a weird bug:When authenticating with facebook SDK via browser as soon as I click the confirmation button in facebook itself at the embeded browser, the app crashes

REST and complex search queries

REST and complex search queries

I'm looking for a robust way to model search queries in a REST api.In my api, you can specify the search criteria in the URI of a resource using query parameters.For example: /cars?search=color,blue;AND;doors,4 Returns a list of blue cars

How do you deal with m..n relationships in a relational database?

How do you deal with m..n relationships in a relational database?

Let's look at an example - books. A book can have 1..n authors. An author can have 1..m books. What is a good way to represent all of the authors of a book?I came up with an idea to create a Books table and an Authors table. The Authors tab

Database design for storing food recipes

Database design for storing food recipes

I want to make a database of recipes that I like, but I'm having trouble designing it. I want to have at least two tables:Recipe table (Has description, ingredients, directions, etc...)Ingredients table (ingredient type, other attributes, e

SOAP 1.2 python client

SOAP 1.2 python client

I am looking for a python SOAP 1.2 client but it seems that it does not exist . All of the existing clients are either not maintainted or only compatible with SOAP 1.1:sudsSOAPpyZSI 1:The zeep library supports both SOAP 1.1 and 1.2 as lo

What are RFC's?

What are RFC's?

I think there are a lot of people out there unaware of RFC's (Request for Comments). I know what they are at a logical level, but can anybody give a good description for a new developer? Also, sharing some resources on how to use and read t