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How to print instances of a class using print()?
...ris Lutz mentioned, this is defined by the __repr__ method in your class.
From the documentation of repr():
For many types, this function makes an attempt to return a string that would yield an object with the same value when passed to eval(), otherwise the representation is a string enclosed i...
Array Length in Java
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It contains the allocated size, 10. The unassigned indexes will contain the default value which is 0 for int.
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Changing image sizes proportionally using CSS?
...on (in my example the width), when telling the image to have the width at 100%, it will make it the full width of the container. The auto at the height will make the image have the height proportional to the new width.
Ex:
HTML:
<div class="container">
<img src="something.png" />
<...
On logout, clear Activity history stack, preventing “back” button from opening logged-in-only Activi
...n my application require a user to be logged-in to view. Users can log out from almost any activity. This is a requirement of the application. At any point if the user logs-out, I want to send the user to the Login Activity . At this point I want this activity to be at the bottom of the history sta...
Why is there no multiple inheritance in Java, but implementing multiple interfaces is allowed?
...Containing more than one subobject of same base class, ambiguity (override from which base class use), complicated rules of resolving such ambiguity.
– Tadeusz Kopec
May 22 '13 at 7:54
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Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
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Are you connecting to "localhost" or "127.0.0.1" ? I noticed that when you connect to "localhost" the socket connector is used, but when you connect to "127.0.0.1" the TCP/IP connector is used. You could try using "127.0.0.1" if the socket connector is not enabled/wo...
How to force 'cp' to overwrite directory instead of creating another one inside?
...rce directory does not. This is not an expected behavior of copying files from one place to the other. It only overwrites in the target things that are also in the source, it doesn't touch anything in the target that is not in the source. You can clean the target folder by prepending a command to...
Disable Logback in SpringBoot
....g log4j in your classpath. Why do you wish to exclude the default loggers from you application?
– F.O.O
Sep 16 '14 at 11:34
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How do I get both STDOUT and STDERR to go to the terminal and a log file?
...ome reason, 2>&1 | tee -a filename wasn't saving stderr to the file from my script, but it worked fine when I copied the command and pasted it into the terminal! The bracket trick works fine, though.
– Ed Brannin
Jul 29 '09 at 2:11
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What can , and be used for?
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Send params from View to an other View, from Sender View to Receiver View use viewParam and includeViewParams=true
In Sender
Declare params to be sent. We can send String, Object,…
Sender.xhtml
<f:metadata>
<f:viewPara...