Emulate ggplot2 default color palette
It is just equally spaced hues around the color wheel, starting from 15: For example:
Meaning of “! -S” in shell script
The command you are looking at is actually this: Although it looks like punctuation, [ is actually the name of a command, also called test; so the command can also be written like this: Which in context would look like this: As the name suggests, its job is to test some attribute of a string, … Read more
Should a 502 HTTP status code be used if a proxy receives no response at all?
Yes. Empty or incomplete headers or response body typically caused by broken connections or server side crash can cause 502 errors if accessed via a gateway or proxy. For more information about the network errors
How does the Java ‘for each’ loop work?
Note that if you need to use i.remove(); in your loop, or access the actual iterator in some way, you cannot use the for ( : ) idiom, since the actual iterator is merely inferred. As was noted by Denis Bueno, this code works for any object that implements the Iterable interface. Note that if … Read more
What file uses .md extension and how should I edit them?
Markdown is a plain-text file format. The extensions .md and .markdown are just text files written in Markdown syntax. If you have a Readme.md in your repo, GitHub will show the contents on the home page of your repo. Read the documentation: Standard Markdown GitHub Flavored Markdown You can edit the Readme.md file in GitHub … Read more
Signing out from TFS and sign in with new credentials
It’s strange that only local windows account can show the TFS credential under the Credential manager. So if you are using local user, you can remove the credentials from Credential manager: Go to Control Panel > User Accounts > Manage Your Credentials > select your Team foundation Server and choose remove. If you are using … Read more
Does mobile Google Chrome support browser extensions?
Extensions are not supported, see: https://developers.google.com/chrome/mobile/docs/faq . Specifically: Does Chrome for Android now support the embedded WebView for a hybrid native/web app? A Chrome-based WebView is included in Android 4.4 (KitKat) and later. See the WebView overview for details. Does Chrome for Android support apps and extensions? Chrome apps and extensions are currently not supported … Read more
Why am I getting error for apple-touch-icon-precomposed.png
I guess apple devices make those requests if the device owner adds the site to it. This is the equivalent of the favicon. To resolve, add 2 100×100 png files, save it as apple-touch-icon-precomposed.png and apple-touch-icon.png and upload it to the root directory of the server. After that, the error should be gone. I noticed … Read more
strip(char) on a string
You need to replace() in this use case, not strip() strip(): string.strip(s[, chars]) Return a copy of the string with leading and trailing characters removed. If chars is omitted or None, whitespace characters are removed. If given and not None, chars must be a string; the characters in the string will be stripped from the … Read more
What exactly does += do in python?
59 I need to know what += does in Python. It’s that simple. I also would appreciate links to definitions of other shorthand tools in Python.