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Storing SHA1 hash values in MySQL
...es just 4 bit per character and thus would need 160/4 = 40 characters. But if you use 8 bit per character, you would only need a 160/8 = 20 character long field.
So I recommend you to use BINARY(20) and the UNHEX function to convert the SHA1 value to binary.
I compared storage requirements for BIN...
Converting NumPy array into Python List structure?
....int32 or np.float32) to the "nearest compatible Python type" (in a list). If you want to preserve the numpy data types, you could call list() on your array instead, and you'll end up with a list of numpy scalars. (Thanks to Mr_and_Mrs_D for pointing that out in a comment.)
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How to count the number of files in a directory using Python
...s.listdir() will be slightly more efficient than using glob.glob. To test if a filename is an ordinary file (and not a directory or other entity), use os.path.isfile():
import os, os.path
# simple version for working with CWD
print len([name for name in os.listdir('.') if os.path.isfile(name)])
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Jquery: how to trigger click event on pressing enter key
......
$('#txtSearchProdAssign').keypress(function (e) {
var key = e.which;
if(key == 13) // the enter key code
{
$('input[name = butAssignProd]').click();
return false;
}
});
$(function() {
$('input[name="butAssignProd"]').click(function() {
alert('Hello...!');
});
...
How to install APK from PC?
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If they use Gmail, you can email the APK to them, and when they receive the email in the Android Gmail client the email has an "Install" button on it. Installing apps via Gmail is very easy, however do note that before anyone...
How to efficiently concatenate strings in go
...
If you know the total length of the string that you're going to preallocate then the most efficient way to concatenate strings may be using the builtin function copy. If you don't know the total length before hand, do not use...
How to reset or change the MySQL root password?
...ERE
User = 'root';
FLUSH PRIVILEGES;
exit;
Note: on some versions, if password column doesn't exist, you may want to try:
UPDATE user SET authentication_string=password('YOURNEWPASSWORD') WHERE user='root';
Note: This method is not regarded as the most secure way of resetting the passwo...
How do I start a program with arguments when debugging?
...ant to debug a program in Visual Studio 2008. The problem is that it exits if it doesn't get arguments. This is from the main method:
...
How can I use UUIDs in SQLAlchemy?
...s there a way to define a column (primary key) as a UUID in SQLAlchemy if using PostgreSQL (Postgres)?
9 Answers
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Are trailing commas in arrays and objects part of the spec?
...s: ECMAScript 5 and ECMAScript 3
Section 11.1.5 in the ECMAScript 5 specification:
ObjectLiteral :
{ }
{ PropertyNameAndValueList }
{ PropertyNameAndValueList , }
So yes, it is part of the specification.
Update: Apparently this is new in ES5. In ES3 (page 41), the definition was...