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How can I convert string date to NSDate?
...
Swift 4
import Foundation
let dateString = "2014-07-15" // change to your date format
var dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd"
let date = dateFormatter.date(from: dateString)
println(date)
Swift 3
import Foundation
v...
When to use os.name, sys.platform, or platform.system?
... checks for the system’s identity
Often the "best" future-proof way to test whether some functionality is available is just to try to use it and use a fallback if it fails.
what about the difference between sys.platform and platform.system()?
platform.system() returns a normalized value th...
MongoDB/Mongoose querying at a specific date?
...onents. To query those times you need to create a date range that includes all moments in a day.
db.posts.find( //query today up to tonight
{"created_on": {"$gte": new Date(2012, 7, 14), "$lt": new Date(2012, 7, 15)}})
s...
Android XML Percent Symbol
...
The Android Asset Packaging Tool (aapt) has become very strict in its latest release and is now used for all Android versions. The aapt-error you're getting is generated because it no longer allows non-positional format specifiers.
Here are a few ideas how you can include the %-symbol in your re...
C++11 reverse range-based for-loop
...
Actually Boost does have such adaptor: boost::adaptors::reverse.
#include <list>
#include <iostream>
#include <boost/range/adaptor/reversed.hpp>
int main()
{
std::list<int> x { 2, 3, 5, 7, 11, 13, 1...
Best way to iterate through a Perl array
...ay elements occurs. ($_ is aliased to the element in #1, but #2 and #3 actually copy the scalars from the array.)
#5 might be similar.
In terms memory usage: They're all the same except for #5.
for (@a) is special-cased to avoid flattening the array. The loop iterates over the indexes of the array...
MongoDB SELECT COUNT GROUP BY
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I need some extra operation based on the result of aggregate function. Finally I've found some solution for aggregate function and the operation based on the result in MongoDB. I've a collection Request with field request, source, status, requestDate.
Single Field Group By & Count:
db.Request...
Python: most idiomatic way to convert None to empty string?
...
If you actually want your function to behave like the str() built-in, but return an empty string when the argument is None, do this:
def xstr(s):
if s is None:
return ''
return str(s)
...
how to read System environment variable in Spring applicationContext
...s a file:/// url.
So for example, if you have a config file located in
/testapp/config/my.app.config.properties
then set an environment variable like so:
MY_ENV_VAR_PATH=/testapp/config
and your app can load the file using a bean definition like this:
e.g.
<bean class="org.springframewo...
How to use the TextWatcher class in Android?
...ich are overridden for the text watcher. you can mask the text which you really wanted to.
– Dinesh Prajapati
Dec 17 '11 at 8:07
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