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What does the exclamation mark mean in a Haskell declaration?
...inside it, probably through a pattern match:
case f of
Foo 0 _ _ _ -> "first arg is zero"
_ -> "first arge is something else"
This is going to execute enough code to do what it needs, and no more. So it will create a Foo with four parameters (because you can't look insid...
Using GZIP compression with Spring Boot/MVC/JavaConfig with RESTful
....compression.min-response-size=10240
In application.properties 1.2.2 - <1.3
server.tomcat.compression=on
server.tomcat.compressableMimeTypes=application/json,application/xml,text/html,text/xml,text/plain,application/javascript,text/css
Older than 1.2.2:
@Component
public class TomcatCustom...
Temporarily disable Eclipse plugin
...
First enable classic update in preference under :
General > Capabilities, then go to
Help > Software Updates > Manage Configuration to disable it.
Below two links for your information
This and this link can help you.
...
How do I create an empty array in YAML?
..._array: []
So in Ruby you have:
x = YAML::load("empty_array: []")
x # => {"empty_array" => []}
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How to convert Milliseconds to “X mins, x seconds” in Java?
...ublic static String getDurationBreakdown(long millis) {
if(millis < 0) {
throw new IllegalArgumentException("Duration must be greater than zero!");
}
long days = TimeUnit.MILLISECONDS.toDays(millis);
millis -= TimeUnit.DAYS.toMillis(days);
long...
On showing dialog i get “Can not perform this action after onSaveInstanceState”
...ception", e);
}
}
}
Note that applying this method will not alter the internal fields of the DialogFragment.class:
boolean mDismissed;
boolean mShownByMe;
This may lead to unexpected results in some cases. Better use commitAllowingStateLoss() instead of commit()
...
How can I access the MySQL command line with XAMPP for Windows?
...ows without manually changing directories, do this:
Go to Control Panel > System > Advanced system settings.
System Properties will appear.
Click on the 'Advanced' tab.
Click 'Environment Variables'.
Under System Variables, locate 'Path' and click Edit.
Append the path to your MySQL installa...
how to create a Java Date object of midnight today and midnight tomorrow?
...
// next day
date.add(Calendar.DAY_OF_MONTH, 1);
JDK 8 - java.time.LocalTime and java.time.LocalDate
LocalTime midnight = LocalTime.MIDNIGHT;
LocalDate today = LocalDate.now(ZoneId.of("Europe/Berlin"));
LocalDateTime todayMidnight = LocalDateTime.of(today, midnight);
LocalDateTime tomorrowMidni...
Swift: Testing optionals for nil
...inside. Otherwise the else closure is triggered.
if let x_val = x, x_val > 5 {
//x_val available on this scope
} else {
}
2. guard let
guard let can do similar things. It's main purpose is to make it logically more reasonable. It's like saying Make sure the variable is not nil, otherwise...
Group query results by month and year in postgresql
...anted: select date_trunc('month', timestamp '2001-02-16 20:38:40')::date => 2001-02-01
– pisaruk
Jan 9 '15 at 17:14
2
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