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Automatic Retina images for web sites
...et
good explanation about why and how to use srcset
Chris Coyer's post for more good info
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Hidden Features of Visual Studio (2005-2010)?
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How to count the number of files in a directory using Python
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os.listdir() will be slightly more efficient than using glob.glob. To test if a filename is an ordinary file (and not a directory or other entity), use os.path.isfile():
import os, os.path
# simple version for working with CWD
print len([name for name ...
Can I use git diff on untracked files?
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HTML5 Email Validation
It is said "With HTML5, we need no more js or a server side code to check if the user's input is a valid email or url address"
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What is a vertical tab?
...ould be CTRL-K.
I don't believe anyone would have a reason to use it any more. Most forms are generated in a printer control language like postscript.
@Talvi Wilson noted it used in python '\v'.
print("hello\vworld")
Output:
hello
world
The above output appears to result in the def...
Uses for Optional
...atches use case #1 in the OP's question. Although, absence of a value is a more precise formulation than null since something like IntStream.findFirst could never return null.
For use case #2, passing an optional argument to a method, this could be made to work, but it's rather clumsy. Suppose you ...
How do you specify that a class property is an integer?
... I think this is the answer. 1) You can't specify anything more granular than simply "number" for numeric types, nor is there any recognized annotation to do so; and 2) there is a bug in the VS plugin that is suggesting invalid types, perhaps based on the ECMA 262 list of reserved ke...
What is the difference between fastcgi and fpm?
...e SpawnFCGI. It spawns the FastCGI children adaptively (meaning launching more if the current load requires it).
Otherwise, there's not much operating difference between it and FastCGI (The request pipeline from start of request to end is the same). It's just there to make implementing it easier....
Check if string begins with something? [duplicate]
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This can be made more generic like so: var x = "/sub/1"; if (pathname.substring(0, x.length) === x) { // ... };. This way you're no longer reliant on knowing the length of x as it may change.
– The Crazy Chimp
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