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Convert UTC datetime string to local datetime
... zones:
from_zone = tz.tzutc()
to_zone = tz.tzlocal()
# utc = datetime.utcnow()
utc = datetime.strptime('2011-01-21 02:37:21', '%Y-%m-%d %H:%M:%S')
# Tell the datetime object that it's in UTC time zone since
# datetime objects are 'naive' by default
utc = utc.replace(tzinfo=from_zone)
# Convert ...
Cross-Origin Request Headers(CORS) with PHP headers
...for me in a Linux server, in IIS for some reason just didn't work, I dont know if its my hosting or just it's not suitable for IIS
– ncubica
Oct 17 '14 at 16:58
...
add created_at and updated_at fields to mongoose schemas
...
As of Mongoose 4.0 you can now set a timestamps option on the Schema to have Mongoose handle this for you:
var thingSchema = new Schema({..}, { timestamps: true });
You can change the name of the fields used like so:
var thingSchema = new Schema({....
Apply multiple functions to multiple groupby columns
... 0.687672 1.754877 0.672401
Using apply and returning a Series
Now, if you had multiple columns that needed to interact together then you cannot use agg, which implicitly passes a Series to the aggregating function. When using apply the entire group as a DataFrame gets passed into the fu...
Can lambda functions be templated?
... the standard draft.
UPDATE 2014: C++14 has been released this year and now provides Polymorphic lambdas with the same syntax as in this example. Some major compilers already implement it.
At it stands (in C++11), sadly no. Polymorphic lambdas would be excellent in terms of flexibility and pow...
Synchronous request in Node.js
... does your system use and what version of node are you using? I'd love to know to determine if I need to switch or not.
– jemiloii
Oct 8 '15 at 17:23
...
Which rows are returned when using LIMIT with OFFSET in MySQL?
...onfused i was thinking that it returns the data between the two digits but now its clear :)
– MR_AMDEV
Sep 16 '18 at 15:09
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Evaluating a mathematical expression in a string
... stack.get()
if func not in safe:
raise TypeError("Function %r now allowed"%func)
stack.put(func(*args))
def LOAD_CONST(context, arg):
cons = arg[0]+arg[1]*256
stack.put(context['code'].co_consts[cons])
def LOAD_NAME(context, arg):
name_num = arg[0]+arg[1]*256
name ...
Check OS version in Swift?
...
Update:
Now you should use new availability checking introduced with Swift 2:
e.g. To check for iOS 9.0 or later at compile time use this:
if #available(iOS 9.0, *) {
// use UIStackView
} else {
// show sad face emoji
}
or...
What is a singleton in C#?
...plementing the Singleton Pattern in C#" covering most of what you need to know - including some good advice regarding thread safety.
To be honest, It's very rare that you need to implement a singleton - in my opinion it should be one of those things you should be aware of, even if it's not used too...