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How do you Force Garbage Collection from the Shell?
So I am looking at a heap with jmap on a remote box and I want to force garbage collection on it. How do you do this without popping into jvisualvm or jconsole and friends?
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How to link to a named anchor in Multimarkdown?
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In standard Markdown, place an anchor <a name="abcd"></a> where you want to link to and refer to it on the same page by [link text](#abcd).
(This uses name= and not id=, for reasons explained in this answer.)
Remote ...
Capturing standard out and error with Start-Process
Is there a bug in PowerShell's Start-Process command when accessing the StandardError and StandardOutput properties?
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java: ArrayList - how can i check if an index exists?
I'm using ArrayList<String> and I add data at specific indices,
how can I check if a specific index exists?
11 Ans...
Find rows with multiple duplicate fields with Active Record, Rails & Postgres
...find records with duplicate values across multiple columns using Postgres, and Activerecord?
5 Answers
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How using try catch for exception handling is best practice
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My exception handling strategy is :
To catch all unhandled exceptions by hooking to the Application.ThreadException event, then decide :
For a UI application: to pop it to the user with an apology message (winforms)
For a Service or a ...
How do I copy a file in Python?
...sts, it will be replaced.
Special files such as character or block devices and pipes cannot be copied with this function.
With copy, src and dst are path names given as strings.
If you use os.path operations, use copy rather than copyfile. copyfile will only accept strings.
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try/catch versus throws Exception
...g that showException doesn't rethrow it.)
So if you call the first method and "do something" fails, then the caller will have to handle the exception. If you call the second method and "do something" fails, then the caller won't see an exception at all... which is generally a bad thing, unless show...
What's the state of the art in email validation for Rails?
What are you using to validate users' email addresses, and why?
13 Answers
13
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CSS filter: make color image with transparency white
...ent from 2014. In those years there have been 33 major versions of Firefox and IE has gone from the second most popular browser in the world to essentially dead.
– Daniel Perván
Dec 1 '18 at 8:29
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