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Converting NSString to NSDate (and back again)
...ater
Updated: 2018
String to Date
var dateString = "02-03-2017"
var dateFormatter = DateFormatter()
// This is important - we set our input date format to match our input string
// if the format doesn't match you'll get nil from your string, so be careful
dateFormatter.dateFormat = "dd-MM-yyyy"
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is_file or file_exists in PHP
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as far as i know, if_file also fails for symbolic links, not only directories.
– stefs
Apr 27 '09 at 10:03
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How do I check if a string is unicode or ascii?
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Just for other people's reference - str.decode doesn't not exist in python 3. Looks like you have to unicode(s, "ascii") or something
– Shadow
Aug 5 '16 at 5:50
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How to clone all remote branches in Git?
...eally means is that the branch is taken from the index and created locally for you. The previous line is actually more informative as it tells you that the branch is being set up to track the remote branch, which usually means the origin/branch_name branch
Now, if you look at your local branches, t...
Remove unwanted parts from strings in a column
I am looking for an efficient way to remove unwanted parts from strings in a DataFrame column.
9 Answers
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os.walk without digging into directories below
...sert os.path.isdir(some_dir)
num_sep = some_dir.count(os.path.sep)
for root, dirs, files in os.walk(some_dir):
yield root, dirs, files
num_sep_this = root.count(os.path.sep)
if num_sep + level <= num_sep_this:
del dirs[:]
It works just like os.walk, b...
Read error response body in Java
... gives access to the stream ON an exception. So i guess this is a good way for Java,...
private InputStream dispatch(HttpURLConnection http) throws Exception {
try {
return http.getInputStream();
} catch(Exception ex) {
return http.getErrorStream();
}
}
Or an implemen...
Converting datetime.date to UTC timestamp in Python
...erent and the C mktime() has no access to the tz database on the given platform. You could use pytz module (e.g., via tzlocal.get_localzone()) to get access to the tz database on all platforms. Also, utcfromtimestamp() may fail and mktime() may return non-POSIX timestamp if "right" timezone is used....
Clojure: reduce vs. apply
...y are of course only equivalent (in terms of the ultimate result returned) for associative functions which need to see all their arguments in the variable-arity case. When they are result-wise equivalent, I'd say that apply is always perfectly idiomatic, while reduce is equivalent -- and might shave...
In CMake, how can I test if the compiler is Clang?
We have a set of cross-platform CMake build scripts , and we support building with Visual C++ and GCC .
5 Answers
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