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Does adding a duplicate value to a HashSet/HashMap replace the previous value
...ten. The key is just used to get the hashvalue() and find the value in the table with it.
Since HashSet uses the keys of a HashMap and sets arbitrary values which don't really matter (to the user) as a result the Elements of the Set aren't replaced either.
...
embedding image in html email
...not work, you may try one of these tools that convert the image to an HTML table (beware the size of your image though):
http://stylecampaign.com/blog/2009/12/bypass-image-blocking-by-converting-images-to-html/
http://neil.fraser.name/software/img2html/
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Are fluid websites worth making anymore? [closed]
...
Text based apps: No. Table based apps: Yes.
Pros of fluid layouts
People with big monitors gets to use their screen real estate.
Easier for users with big monitors when you have a lot of information on your page.
Cons of fluid layouts:
A f...
Visual Studio debugging/loading very slow
.../thread/…. Btw thanks for the great answer
– Bobby Tables
Mar 5 '13 at 11:04
16
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Case-insensitive search in Rails model
... an Arel example of a case-insensitive search:
Product.where(Product.arel_table[:name].matches('Blue Jeans'))
The advantage of this type of solution is that it is database-agnostic - it will use the correct SQL commands for your current adapter (matches will use ILIKE for Postgres, and LIKE for e...
What does collation mean?
...'s very different from the database's native one. And if you use temporary tables, you must also keep track of tempdb's collation... But you do can do it.
– Joe Pineda
May 16 '13 at 0:09
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Rails create or update magic?
...
Won't assign_or_new return the first row in the table if it exists and then that row will get updated? It seems to be doing that for me.
– steve klein
Apr 27 '15 at 17:13
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Is it possible to modify variable in python that is in outer, but not global, scope?
...esides the global
(module) scope.
For python 2, I usually just use a mutable object (like a list, or dict), and mutate the value instead of reassign.
example:
def foo():
a = []
def bar():
a.append(1)
bar()
bar()
print a
foo()
Outputs:
[1, 1]
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How to position text over an image in css
... div.
If you have more than one line you'll want to set the display to be table-cell and vertical-alignment to middle.
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How do I run a rake task from Capistrano?
...hen, from /rails_root/, you can run:
cap staging rake:invoke task=rebuild_table_abc
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