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Building a complete online payment gateway like Paypal [closed]
...in, but by this I dont mean a local bank branch. Each major bank will generally have a separate card acquiring arm. So here in the UK we have (eg) Natwest bank, which uses Streamline (or Worldpay) as its acquiring arm. In total even though we have scores of major banks, they all end up using one of ...
How do I compare two string variables in an 'if' statement in Bash? [duplicate]
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@Sangimed, [ is a command (actually, an alternate name for the command called test); if you run which [, you'll see there's actually an executable file for it on disk (even though the shell may provide a built-in implementation as a performance optimizatio...
What is the naming convention in Python for variable and function names?
... C# background the naming convention for variables and method names are usually either camelCase or PascalCase:
13 Answers
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psql: FATAL: database “” does not exist
... it in the past on other machines but it's giving me some trouble when installing on my macbook. I've installed the application and I ran:
...
How to convert the ^M linebreak to 'normal' linebreak in a file opened in vim?
...rl-M> means type Ctrl+V then Ctrl+M.
Explanation
:%s
substitute, % = all lines
<Ctrl-V><Ctrl-M>
^M characters (the Ctrl-V is a Vim way of writing the Ctrl ^ character and Ctrl-M writes the M after the regular expression, resulting to ^M special character)
/\r/
with new line (\r)
...
Java using enum with switch statement
...ting from the integer to the type-safe enum. Java will not do it automatically. There's a couple of ways you can go about this:
Use a list of static final ints rather than a type-safe enum and switch on the int value you receive (this is the pre-Java 5 approach)
Switch on either a specified id v...
String slugification in Python
... named python-slugify, which does a pretty good job of slugifying:
pip install python-slugify
Works like this:
from slugify import slugify
txt = "This is a test ---"
r = slugify(txt)
self.assertEquals(r, "this-is-a-test")
txt = "This -- is a ## test ---"
r = slugify(txt)
self.assertEquals(r, "thi...
Overcoming “Display forbidden by X-Frame-Options”
...n pages), simply sending another X-Frame-Options header with any string at all disables the SAMEORIGIN or DENY commands.
eg. for PHP, putting
<?php
header('X-Frame-Options: GOFORIT');
?>
at the top of your page will make browsers combine the two, which results in a header of
X-Frame...
How to use my view helpers in my ActionMailer views?
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I thought these were supposed to be automatically included in Rails 4? guides.rubyonrails.org/…
– gabeodess
Jan 28 '15 at 22:21
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What is the --save option for npm install?
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Update npm 5:
As of npm 5.0.0, installed modules are added as a dependency by default, so the --save option is no longer needed. The other save options still exist and are listed in the documentation for npm install.
Original answer:
Before version 5, NPM si...