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How to jump from Intellij terminal to editor with shortcut
...ention, I wanted to remind everyone that you can toggle between the editor and the terminal window easily enough with a built in action. By default it is mapped to Alt+F12 and ⌥F12. To check other mappings, view it in the menu at View > Tool Windows > Terminal. Alternatively go to the Workin...
Android Emulator: Installation error: INSTALL_FAILED_VERSION_DOWNGRADE
I am currently trying to compile and test a small Android Application.
15 Answers
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No Exception while type casting with a null in java
...ally print methods call String.valueOf(object) method on the input object. And in valueOf method, this check helps to avoid null pointer exception:
return (obj == null) ? "null" : obj.toString();
For rest of your confusion, calling any method on a null object should throw a null pointer exception...
Programmatically scroll a UIScrollView
...at I end up with a slideshow that runs on its own with a click of a button and a configurable pause between each scroll?
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How to use SSH to run a local shell script on a remote machine?
...is a Windows box, you can use Plink (part of PuTTY) with the -m parameter, and it will execute the local script on the remote server.
plink root@MachineB -m local_script.sh
If Machine A is a Unix-based system, you can use:
ssh root@MachineB 'bash -s' < local_script.sh
You shouldn't have to ...
How to check if an email address exists without sending an email?
...determine if a recipient actually exists:
You can connect to the server, and issue a VRFY command. Very few servers support this command, but it is intended for exactly this. If the server responds with a 2.0.0 DSN, the user exists.
VRFY user
You can issue a RCPT, and see if the mail is rejected...
How to change an input button image using CSS?
...'re looking for. If you need Safari support, you'll need to place an image and have an onclick function that submits the form.
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Java Date cut off time information
I have a Java Date object containing date and time information. I want to write a method that cuts off the time information, truncates the hours-minutes-seconds, so I only have the date left.
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How to erase the file contents of text file in Python?
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#include<fstream> and then std::ofstream("file.txt"); about as short as in Python. :)
– wilhelmtell
May 4 '10 at 21:44
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glob exclude pattern
I have a directory with a bunch of files inside: eee2314 , asd3442 ... and eph .
10 Answers
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