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Check if list of objects contain an object with a certain attribute value
I want to check if my list of objects contain an object with a certain attribute value.
1 Answer
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How to debug an apache virtual host configuration?
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Syntax check
To check configuration files for syntax errors:
# Red Hat-based (Fedora, CentOS) and OSX
httpd -t
# Debian-based (Ubuntu)
apache2ctl -t
# MacOS
apachectl -t
List virtual hosts
To list all virtual hosts, and their locations:
# Red Hat-based (Fedora, CentOS) and O...
Android: failed to convert @drawable/picture into a drawable
...xact same size in the same folder, and try to reference it, is flags up an error "Failed to convert @drawable/picture into a drawable" . I have tried the same image with a different name and it just keeps giving me that error. I have also tried it in a different XML layout and the same thing. Also ...
“Treat all warnings as errors except…” in Visual Studio
In Visual Studio, I can select the "Treat warnings as errors" option to prevent my code from compiling if there are any warnings. Our team uses this option, but there are two warnings we would like to keep as warnings.
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How do I make an HTML text box show a hint when empty?
I want the search box on my web page to display the word "Search" in gray italics. When the box receives focus, it should look just like an empty text box. If there is already text in it, it should display the text normally (black, non-italics). This will help me avoid clutter by removing the label....
Replace a value in a data frame based on a conditional (`if`) statement
In the R data frame coded for below, I would like to replace all of the times that B
appears with b .
8 Answers
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How to avoid .pyc files?
Can I run the python interpreter without generating the compiled .pyc files?
10 Answers
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Command not found error in Bash variable assignment
... If you have a variable with a name that contaings "-", the same error happens. In that case, the solution is to remove the "-"
– chomp
Jun 17 '16 at 2:27
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Getting ssh to execute a command in the background on target machine
This is a follow-on question to the How do you use ssh in a shell script? question. If I want to execute a command on the remote machine that runs in the background on that machine, how do I get the ssh command to return? When I try to just include the ampersand (&) at the end of the command it ...
Getting the exception value in Python
...t exception classes will have an args attribute. Often, args[0] will be an error message.
It should be noted that just using str will return an empty string if there's no error message whereas using repr as pyfunc recommends will at least display the class of the exception. My take is that if you'r...