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How to validate an Email in PHP?
How can I validate the input value is a valid email address using php5. Now I am using this code
7 Answers
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var.replace is not a function
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My guess is that the code that's calling your trim function is not actually passing a string to it.
To fix this, you can make str a string, like this: str.toString().replace(...)
...as alper pointed out below.
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Javascript when to use prototypes
I'd like to understand when it is appropriate to use prototype methods in js. Should they always be used? Or are there cases where using them is not preferred and/or incurs a performance penalty?
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How do I keep two side-by-side divs the same height?
...to be the same, and stay the same if one of them resizes. I can't figure this one out though. Ideas?
22 Answers
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Android: Scale a Drawable or background image?
...allocated when the page gets created. Does anyone have an idea how to do this?
13 Answers
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Get file version in PowerShell
...Info]::GetVersionInfo("somefilepath").FileVersion
Or as noted here on a list of files:
get-childitem * -include *.dll,*.exe | foreach-object { "{0}`t{1}" -f $_.Name, [System.Diagnostics.FileVersionInfo]::GetVersionInfo($_).FileVersion }
Or even nicer as a script: https://jtruher3.wordpress.com/...
Test whether a list contains a specific value in Clojure
What is the best way to test whether a list contains a given value in Clojure?
18 Answers
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Check if a given key already exists in a dictionary and increment it
...You are looking for collections.defaultdict (available for Python 2.5+). This
from collections import defaultdict
my_dict = defaultdict(int)
my_dict[key] += 1
will do what you want.
For regular Python dicts, if there is no value for a given key, you will not get None when accessing the dict -- ...
How to append to a file in Node?
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edited Jan 11 '18 at 12:25
Dan Dascalescu
98.2k363...
Remove last character of a StringBuilder?
...ernatively, use the Joiner class from Guava :)
As of Java 8, StringJoiner is part of the standard JRE.
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