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ipython: print complete history (not just current session)
...ou can use the the get_session_info function to retreive the date and time for the session you are interested in.(http://ipython.readthedocs.io/en/stable/api/generated/IPython.core.history.html?highlight=hist#IPython.core.history.HistoryAccessor.get_session_info)
profile_hist=IPython.core.history.H...
T-SQL: Using a CASE in an UPDATE statement to update certain columns depending on a condition
... to stay away from. The solution above will almost certainly be sufficient for what you're after.
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Ruby get object keys as array
...3/Hash.html#method-i-keys
You'll find all the different methods available for each class.
If you don't know what you're dealing with:
puts my_unknown_variable.class.to_s
This will output the class name.
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How to assign a Git SHA1's to a file without Git?
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This is how Git calculates the SHA1 for a file (or, in Git terms, a "blob"):
sha1("blob " + filesize + "\0" + data)
So you can easily compute it yourself without having Git installed. Note that "\0" is the NULL-byte, not a two-character string.
For example,...
Can you have additional .gitignore per directory within a single repo?
...rther perhaps related: How do I tell git to always select my local version for conflicted merges on a specific file?
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SQL JOIN vs IN performance?
...r an IN will give me the correct results... Which typically has better performance and why? How much does it depend on what database server you are running? (FYI I am using MSSQL)
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No Main() in WPF?
... (disambiguating it in project-properties as necessary). Look in obj/debug for an app file; I have (courtesy of "C# 2010 Express") App.g.i.cs with:
namespace WpfApplication1 {
/// <summary>
/// App
/// </summary>
[System.CodeDom.Compiler.GeneratedCodeAttribute("Present...
What is the difference between print and puts?
For example in this line of code I wrote, print and puts produce different results.
6 Answers
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What does 'stale file handle' in Linux mean?
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When the directory is deleted, the inode for that directory (and the inodes for its contents) are recycled. The pointer your shell has to that directory's inode (and its contents's inodes) are now no longer valid. When the directory is restored from backup, the ol...
JPanel Padding in Java
I have a formatting question for my Java swing application. It should be fairly straightforward, but I am having difficulty finding any aid (Every topic seems to be regarding removing any default padding in JPanel). The text in my various JPanels hug the sides and top, touching the colored borders...