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Cleanest way to build an SQL string in Java
...thing) - instead of the awful string concat method using millions of "+"'s and quotes which is unreadable at best - there must be a better way.
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Programmatically get the cache line size?
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@android : I use fedora-18 x64 machine with core-i5 processor. cat /sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size returns 64 in my system. Same for index1,2,3 folders also.
– Abid Rahman ...
Render Partial View Using jQuery in ASP.NET MVC
... however, call a method (action) that will render the partial view for you and add it to the page using jQuery/AJAX. In the below, we have a button click handler that loads the url for the action from a data attribute on the button and fires off a GET request to replace the DIV contained in the par...
Recommended way to embed PDF in HTML?
... As noted in another answer, scribd actually uses pdf2swf to convert pdf files
– Peter Craig
Nov 4 '09 at 9:14
8
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Should an Enum start with a 0 or a 1?
...stic trade off I guess - disk space is cheap though, time spent constantly converting between enum values and an intwhen searching the db is relatively expensive (doubly so if you have a reporting tool setup against a database or something similar). If you're worried abotu space, with the newer SQL ...
Rank items in an array using Python/NumPy, without sorting array twice
I have an array of numbers and I'd like to create another array that represents the rank of each item in the first array. I'm using Python and NumPy.
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Android: How to enable/disable option menu item on button click?
...enu() method is called
only once, as described above. The
system keeps and re-uses the Menu you
define in this method until your
activity is destroyed. If you want to
change the Options Menu any time after
it's first created, you must override
the onPrepareOptionsMenu() method.
This ...
How to store a dataframe using Pandas
...at you keep the pandas table in memory as you edit and reload your script.
convert the csv to an HDF5 table
updated use DataFrame.to_feather() and pd.read_feather() to store data in the R-compatible feather binary format that is super fast (in my hands, slightly faster than pandas.to_pickle() on num...
Is there an auto increment in sqlite?
... you should try to avoid:
INSERT INTO people VALUES ("John", "Smith");
and use
INSERT INTO people (first_name, last_name) VALUES ("John", "Smith");
instead. The first version is very fragile — if you ever add, move, or delete columns in your table definition the INSERT will either fail o...
How do I concatenate const/literal strings in C?
I'm working in C, and I have to concatenate a few things.
17 Answers
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