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What is getattr() exactly and how do I use it?
...is that I still can't grasp the idea of its usage. The only thing I understand about getattr() is that getattr(li, "pop") is the same as calling li.pop .
...
Why are dashes preferred for CSS selectors / HTML attributes?
...ops.
Also, using hyphens allows you to take advantage of the |= attribute selector, which selects any element containing the text, optionally followed by a dash:
span[class|="em"] { font-style: italic; }
This would make the following HTML elements have italic font-style:
<span class="em">...
Socket File “/var/pgsql_socket/.s.PGSQL.5432” Missing In Mountain Lion (OS X Server)
...I was using '127.0.0.1', but then I moved my code to production (Debian 7) and had to change it to ''. It is kind of weird that they give such an error message that leads one to believe that the problem might be somewhere else.
– fang_dejavu
Dec 29 '14 at 14:1...
Difference between wait() and sleep()
What is the difference between a wait() and sleep() in Threads?
33 Answers
33
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Difference between File.separator and slash in paths
What is the difference between using File.separator and a normal / in a Java Path-String?
14 Answers
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SublimeText encloses lines in white rectangles
...o do not like the white rectangle, so I opted for fills.
{
/*
Selects the way the lines with errors or warnings are marked; "outline"
(default) draws outline boxes around the lines, "fill" fills the lines
with the outline color, and "none" disables all outline styles
...
Java: Clear the console
...ws, here is a clarification:
Runtime.getRuntime().exec("cls");
This command does not work, for two reasons:
There is no executable named cls.exe or cls.com in a standard Windows installation that could be invoked via Runtime.exec, as the well-known command cls is builtin to Windows’ command l...
Error: could not find function … in R
...itially configured RStudio to use ROxygen to make the documentation -- and selected the configuration where ROxygen would write my NAMESPACE file for me, which kept erasing my edits. So, in my instance I unchecked NAMESPACE from the Roxygen configuration and added exportPattern(".") to NAMESPACE to...
Static linking vs dynamic linking
... presence in most environments. Here "resources" includes disk space, RAM, and cache space. Of course, if your dynamic linker is insufficiently flexible there is a risk of DLL hell.
Dynamic linking means that bug fixes and upgrades to libraries propagate to improve your product without requiring you...
Access restriction on class due to restriction on required library rt.jar?
...ings in the project properties.
Remove the JRE System Library
Add it back; Select "Add Library" and select the JRE System Library. The default worked for me.
This works because you have multiple classes in different jar files. Removing and re-adding the JRE lib will make the right classes be first...