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How should I validate an e-mail address?
...mails addresses that conform to RFC 2822, (and will still fail on things like "user@gmail.com.nospam", as will org.apache.commons.validator.routines.EmailValidator)
(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*|"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\...
What does the “assert” keyword do? [duplicate]
...reported" means that an AssertionError is thrown.
And finally, a lesser known feature of assert:
You can append : "Error message" like this:
assert d != null : "d is null";
to specify what the error message of the thrown AssertionError should be.
This post has been rewritten as an article ...
Convert RGB to RGBA over white
...an as-transparent-as-possible rgba color (when displayed over white). Make sense? I'm looking for an algorithm, or at least idea of an algorithm for how to do so.
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How to export/import PuTTy sessions list?
...xe, require elevated prompt:
Only sessions:
regedit /e "%USERPROFILE%\Desktop\putty-sessions.reg" HKEY_CURRENT_USER\Software\SimonTatham\PuTTY\Sessions
All settings:
regedit /e "%USERPROFILE%\Desktop\putty.reg" HKEY_CURRENT_USER\Software\SimonTatham
Powershell:
Only sessions:
reg export H...
How to read from stdin line by line in Node
I'm looking to process a text file with node using a command line call like:
6 Answers
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Why does instanceof return false for some literals?
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Primitives are a different kind of type than objects created from within Javascript. From the Mozilla API docs:
var color1 = new String("green");
color1 instanceof String; // returns true
var color2 = "coral";
color2 instanceof String; // returns fals...
Why doesn't a python dict.update() return the object?
...ays to merge things up when you really want, e.g., dict(a, **award_dict) makes a new dict much like the one you appear to wish .update returned -- so why not use THAT if you really feel it's important?
Edit: btw, no need, in your specific case, to create a along the way, either:
dict(name=name, de...
How to create an HTTPS server in Node.js?
Given an SSL key and certificate, how does one create an HTTPS service?
9 Answers
9
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jQuery “Does not have attribute” selector?
I can find a div that has an attribute like so:
3 Answers
3
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Python Logging (function name, file name, line number) using a single file
I am trying to learn how an application works. And for this I am inserting debug commands as the first line of each function's body with the goal of logging the function's name as well as the line number (within the code) where I send a message to the log output. Finally, since this application comp...