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How to run SQL script in MySQL?
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If you’re at the MySQL command line mysql> you have to declare the SQL file as source.
mysql> source \home\user\Desktop\test.sql;
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Retina displays, high-res background images
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If you’d like, you can integrate the background-size property into the background like so: background: url('images/box-bg@2x.png') no-repeat top left / 200px 200px. Note that browsers that don’t support background-size wi...
Difference between Java Enumeration and Iterator
What is the exact difference between these two interfaces? Does Enumeration have benefits over using Iterator ? If anyone could elaborate, a reference article would be appreciated.
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How to remove first 10 characters from a string?
...Empty, str.Skip(10));
You dont even need to check the length on this! :) If its less than 10 chars, you get an empty string.
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Where is the documentation for the values() method of Enum?
...alues() method of that type.
Enum Types, Section 8.9, Java Language Specification
The values function simply list all values of the enumeration.
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Get element at specified position - JavaScript
Using Javascript how can I identify the element at a given position? Basically I'm looking to write a function that takes two input parameters (the x and y coordinates) and returns the html element at the position on the screen represented by the parameters.
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git -> show list of files changed in recent commits in a specific directory
...ommand as it shows the file status: Added (A), Copied (C), Deleted (D), Modified (M), Renamed (R), and others.
git log --name-status -10 path/to/dir
It is worth looking at the full documentation page for git log. There you will learn that -10 refers to the past 10 commits, and -p will give you t...
Android: Is it possible to display video thumbnails?
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If you are using API 2.0 or newer this will work.
int id = **"The Video's ID"**
ImageView iv = (ImageView ) convertView.findViewById(R.id.imagePreview);
ContentResolver crThumb = getContentResolver();
BitmapFactory.Options o...
what’s the difference between Expires and Cache-Control headers?
What’s the difference between Expires and Cache-Control headers?
7 Answers
7
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Python None comparison: should I use “is” or ==?
... when you want to check against an object's identity (e.g. checking to see if var is None). Use == when you want to check equality (e.g. Is var equal to 3?).
Explanation:
You can have custom classes where my_var == None will return True
e.g:
class Negator(object):
def __eq__(self,other):
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