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How to sort a HashSet?
...ements sorted for this one occurrence, then just temporarily create a List and sort that:
Set<?> yourHashSet = new HashSet<>();
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List<?> sortedList = new ArrayList<>(yourHashSet);
Collections.sort(sortedList);
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How to calculate time in hours between two dates in iOS
...nds-into-minutes
--edit: See ÐąrέÐέvil's answer below for correctly handling daylight savings/leap seconds
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How to create index on JSON field in Postgres?
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JSON Functions and Operators
– Jared Beck
Sep 11 '13 at 20:27
39
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Coredata Error “data: ”
...ou access one of the properties, core data will go to the persistent store and fetch the rest of your values, then you'll get the full description in the logs.
This seems to be such a common misunderstanding that I decided to write about it, here.
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Filter data.frame rows by a logical condition
... intended for use interactively. For programming it is better to use the standard subsetting functions like [, and in particular the non-standar d evaluation of argument subset can have unanticipated consequen ces."
– Aleksandar Dimitrov
Mar 9 '13 at 13:52
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How to hide underbar in EditText
...u can set the EditText to have a custom transparent drawable or just use
android:background="@android:color/transparent"
or
android:background="@null"
or Programmatically
editText.setBackgroundResource(android.R.color.transparent);
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What does !important mean in CSS?
...sentially, what it says; that 'this is important, ignore subsequent rules, and any usual specificity issues, apply this rule!'
In normal use a rule defined in an external stylesheet is overruled by a style defined in the head of the document, which, in turn, is overruled by an in-line style within ...
Does application.yml support environment variables?
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@IgorDonin, would concatenation of variable assignments and program call an option for you? E. g.: $MY_ENV=value && java -jar ...
– PAX
May 12 at 12:31
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How can I get current date in Android?
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The detailed example is here, I would suggest you go through this example and understand the concept of SimpleDateFormat class.
Final Solution:
Date c = Calendar.getInstance().getTime();
System.out.println("Current time => " + c);
SimpleDateFormat df = new SimpleDateFormat("dd-MMM-yyyy", Locale...
How to stop mysqld
To find out the start command for mysqld (using a mac) I can do:
17 Answers
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