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Calculate number of hours between 2 dates in PHP
...te difficult to take leap seconds into account).
The most flexible way to convert a datetime string with optional timezone information into a Unix timestamp is to construct a DateTime object (optionally with a DateTimeZone as a second argument in the constructor), and then call its getTimestamp met...
Generate JSON string from NSDictionary in iOS
... need to generate a JSON string by using dictionary . Is it possible to convert it? Can you guys please help on this?
14...
How to get a complete list of object's methods and attributes?
...:
# code borrowed from the rlcompleter module
# tested under Python 2.6 ( sys.version = '2.6.5 (r265:79063, Apr 16 2010, 13:09:56) \n[GCC 4.4.3]' )
# or: from rlcompleter import get_class_members
def get_class_members(klass):
ret = dir(klass)
if hasattr(klass,'__bases__'):
for base...
Access multiple elements of list knowing their index
... = pd.Series([-2, 1, 5, 3, 8, 5, 6])
b = [1, 2, 5]
c = a[b]
You can then convert c back to a list if you want:
c = list(c)
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Make first letter of a string upper case (with maximum performance)
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But this converts every first letter of a word to uppercase, not only the first character of a string.
– GvS
Nov 9 '10 at 15:42
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Returning IEnumerable vs. IQueryable
...n expression tree is like the reflection system but for code. The compiler converts your code into a data structure that describes what your code does in a format that's easily digestible.
Why bother with this expression tree thing? I just want Where() to filter my data.
The main reason is that bo...
Why does the is operator return false when given null?
...'t need other types of conversion here) conversion exists; (2) null can be converted to any reference type. Therefore (null is T), where T is a reference type should return true. But no, here we have that explicit exception, which is what seems confusing to me.
– Gebb
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LF will be replaced by CRLF in git - What is that and is it important? [duplicate]
...racters when the user hits the enter key.
Git can handle this by auto-converting CRLF line endings into LF when
you add a file to the index, and vice versa when it checks out code
onto your filesystem. You can turn on this functionality with the
core.autocrlf setting. If you’re on a Win...
How can I use NSError in my iPhone App?
...rname or password.";
"1004" = "Failed to parse FNID."
2) Add macros to convert integer codes to localized error messages. I've used 2 macros in my Constants+Macros.h file. I always include this file in the prefix header (MyApp-Prefix.pch) for convenience.
Constants+Macros.h
// error handling ....
How to convert Linux cron jobs to “the Amazon way”?
For better or worse, we have migrated our whole LAMP web application from dedicated machines to the cloud (Amazon EC2 machines). It's going great so far but the way we do crons is sub-optimal. I have a Amazon-specific question about how to best manage cron jobs in the cloud using "the Amazon way...