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System.currentTimeMillis() vs. new Date() vs. Calendar.getInstance().getTime()
In Java, what are the performance and resource implications of using
8 Answers
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Calculating Pearson correlation and significance in Python
I am looking for a function that takes as input two lists, and returns the Pearson correlation , and the significance of the correlation.
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String vs. StringBuilder
I understand the difference between String and StringBuilder ( StringBuilder being mutable) but is there a large performance difference between the two?
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ValueError: numpy.dtype has the wrong size, try recompiling
I just installed pandas and statsmodels package on my python 2.7
When I tried "import pandas as pd", this error message comes out.
Can anyone help? Thanks!!!
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How do I turn off Oracle password expiration?
...FILE "DEFAULT" LIMIT PASSWORD_VERIFY_FUNCTION NULL;
Then, reset password and unlock user account. It should never expire again:
alter user user_name identified by new_password account unlock;
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How to find the largest file in a directory and its subdirectories?
We're just starting a UNIX class and are learning a variety of Bash commands. Our assignment involves performing various commands on a directory that has a number of folders under it as well.
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Get Image size WITHOUT loading image into memory
I understand that you can get the image size using PIL in the following fashion
6 Answers
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Running Composer returns: “Could not open input file: composer.phar”
I am new to symfony2 and reading symblog . In third chapter while trying with data-fixtures I tried the command:
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How do I parse a string with a decimal point to a double?
... XmlConvert class ... do you have any ideas whether this is better, worse, and/or different than using CultureInfo.InvariantCulture?
– ChrisW
Aug 30 '09 at 21:23
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git visual diff between branches
...UI software, you can try something like SourceTree which supports Mac OS X and Windows.
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