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Force browser to download image files on click
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Not fully supported in all browsers yet but it's a good solution if you don't care about IE or Safari. caniuse.com/#feat=download
– stacigh
Sep 23 '14 at 18:41
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The most sophisticated way for creating comma-separated Strings from a Collection/Array/List?
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Use the Google Guava API's join method:
Joiner.on(",").join(collectionOfStrings);
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Make browser window blink in task Bar
...need to work around when doing title blinking if you want to fully support all major browsers).
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Python: How to get stdout after running os.system? [duplicate]
I want to get the stdout in a variable after running the os.system call.
6 Answers
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How to get the current date and time
...e();
In the words of the Javadocs for the zero-argument constructor:
Allocates a Date object and initializes it so that it represents the time at which it was allocated, measured to the nearest millisecond.
Make sure you're using java.util.Date and not java.sql.Date -- the latter doesn't hav...
Convert timestamp in milliseconds to string formatted time in Java
...imes are not. Joda is also more programmer friendly, you can access almost all functionality from the DateTime class without having to convert back and forth between Date and Calendar
– Sean Patrick Floyd
Nov 10 '10 at 9:06
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How to convert date to timestamp in PHP?
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With DateTime API:
$dateTime = new DateTime('2008-09-22');
echo $dateTime->format('U');
// or
$date = new DateTime('2008-09-22');
echo $date->getTimestamp();
The same with the procedural API:
$date = date_create('2008-09-22'...
Is null an Object?
...is only an object if it is equal to or subclasses java.lang.Object. Practically - yes. You can't create a class that is not a subclass of java.lang.Object, but I never thought about it from a more philosophical point of view
– Andreas Dolk
Dec 12 '09 at 22:23
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Logging best practices [closed]
...s until after Filter.ShouldTrace() has succeeded. This means no expensive calls to ToString() on parameter values until after the system has confirmed message will actually be logged.
The Trace.CorrelationManager allows you to correlate log statements about the same logical operation (see below)....
How to check “hasRole” in Java Code with Spring Security?
...as a web app you could just declare HttpServletRequest as a parameter and call isUserInRole
– David Bradley
Sep 9 '18 at 3:34
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