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Check if a string contains a number
... re.compile('\d')
def f3(string):
return RE_D.search(string)
# Output from iPython
# In [18]: %timeit f1('assdfgag123')
# 1000000 loops, best of 3: 1.18 µs per loop
# In [19]: %timeit f2('assdfgag123')
# 1000000 loops, best of 3: 923 ns per loop
# In [20]: %timeit f3('assdfgag123')
# 1000...
When to add what indexes in a table in Rails
...x (:users, [:category_id, :state_id]), what happens? How is this different from adding the index for each key?
Then the index is a combined index of the two columns. That doesn't make any sense, unless you want all entries for one category_id AND one state_id (It should be category_id not categor...
Maximum length of the textual representation of an IPv6 address?
... the scope zone stackoverflow.com/questions/5746082/…, e.g. you get that from RemoteEndpointMessageProperty.Address
– Rory
Jun 18 '12 at 10:26
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Convert Elixir string to integer or float
...
There are 4 functions to create number from string
String.to_integer, String.to_float
Integer.parse, Float.parse
String.to_integer works nicely but String.to_float is tougher:
iex()> "1 2 3 10 100" |> String.split |> Enum.map(&String.to_integer/1)
[...
Calling a JavaScript function named in a variable [duplicate]
...Interval. I write a lot of JS, and I NEVER need eval. "Needing" eval comes from not knowing the language deeply enough. You need to learn about scoping, context, and syntax. If you're ever stuck with an eval, just ask--you'll learn quickly.
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Difference between jar and war in Java
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From Java Tips: Difference between ear jar and war files:
These files are simply zipped files
using the java jar tool. These files are
created for different purposes. Here
is the description of these files:
...
Private module methods in Ruby
...n this doesn't meet the goal. Because you can access the "perform" method from outside the module by calling GTranslate::Translator.new.perform. In otherwords, it is not private.
– Zack Xu
Jun 26 '13 at 16:07
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How to stop creating .DS_Store on Mac? [closed]
.../usr/local/.dscage
After that, You could delete recursively all .DS_Store from your mac.
find ~ -name ".DS_Store" -delete
or
find <your path> -name ".DS_Store" -delete
You should repeat procedure after each Mac major update.
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String.format() to format double in java
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code extracted from this link ;
Double amount = new Double(345987.246);
NumberFormat numberFormatter;
String amountOut;
numberFormatter = NumberFormat.getNumberInstance(currentLocale);
amountOut = numberFormatter.format(amount);
System.ou...
Padding or margin value in pixels as integer using jQuery
... method actually returns the "px" suffix or not, however the JSizes plugin from the other answer (which I ended up using) returns an integer when the return value is passed into ParseInt(...), just FYI.
– Dan Herbert
Aug 31 '09 at 19:31
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