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PostgreSQL - fetch the row which has the Max value for a column
I'm dealing with a Postgres table (called "lives") that contains records with columns for time_stamp, usr_id, transaction_id, and lives_remaining. I need a query that will give me the most recent lives_remaining total for each usr_id
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Parsing CSV files in C#, with header
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Let a library handle all the nitty-gritty details for you! :-)
Check out FileHelpers and stay DRY - Don't Repeat Yourself - no need to re-invent the wheel a gazillionth time....
You basically just need to define that shape of your data - the fi...
Differences between distribute, distutils, setuptools and distutils2?
...e Foundation just adds credence to it. The Project Summaries page is especially relevant here.
Summary of tools:
Here's a summary of the Python packaging landscape:
Supported tools:
distutils is still the standard tool for packaging in Python. It is included in the standard library (Python 2 an...
Is there a version control system for database structure changes?
...keeps track of your current db version.
To migrate up, you run a command called "db:migrate" which looks at your version and applies the needed scripts. You can migrate down in a similar way.
The migration scripts themselves are kept in a version control system -- whenever you change the database ...
How can I search for a commit message on GitHub?
Not in a Git repository , but rather in GitHub specifically - how do I search just the commit messages of a specific repository/branch?
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How to loop through array in jQuery?
... of this within the body of the loop, no unnecessary overhead of function calls (e.g., in theory faster, though in fact you'd have to have so many elements that the odds are you'd have other problems; details).
ES5's forEach:
As of ECMAScript5, arrays have a forEach function on them which makes it...
Most efficient way to prepend a value to an array
...g-O performance if you are ok with modifying the array in-place. If you really can't mutate the original array then you would do something like the below snippet, which doesn't seem to be appreciably faster than your solution:
a.slice().unshift(0); // Use "slice" to avoid mutating "a".
[Edit 2]
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How to enable Bootstrap tooltip on disabled button?
... Just a side note, this only works for IE in 11 or higher. Pretty much all other modern browsers have supported it for a while. See: caniuse.com/#feat=pointer-events
– Neil Monroe
Aug 14 '14 at 22:26
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How do you find out the caller function in JavaScript?
Is there a way to find out the call stack?
31 Answers
31
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How can I detect if a file is binary (non-text) in python?
...446549/… The answer based on an activestate recipe looks good to me, it allows a small proportion of non-printable characters (but no \0, for some reason).
– Sam Watkins
Mar 14 '13 at 2:57
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