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Node.js Error: Cannot find module express
...un the command node C:\ChatServer\Server>node server.js. It should work now !!!!
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R: Comment out block of code [duplicate]
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In Emacs you can also use M-x comment-region. Didn't know about C-x r, thanks!
– Sacha Epskamp
Feb 2 '12 at 8:11
22
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List files with certain extensions with ls and grep
...d that by doing: ls *.mp4 *.mp3 *.exe 2> /dev/null Only thought of that now thou :P
– Mint
Sep 19 '09 at 3:40
1
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SQL query to group by day
...SISTED
ALTER TABLE dbo.Sales
ADD SaleDay AS DAY(Created) PERSISTED
and now you could easily group by, order by etc. by day, month or year of the sale:
SELECT SaleDay, SUM(Amount)
FROM dbo.Sales
GROUP BY SaleDay
Those calculated fields will always be kept up to date (when your "Created" date c...
Add Foreign Key to existing table
...d an index to it..
ALTER TABLE users ADD INDEX index_name (index_column)
Now add the constraint
ALTER TABLE foreign_key_table
ADD CONSTRAINT foreign_key_name FOREIGN KEY (foreign_key_column)
REFERENCES primary_key_table (primary_key_column) ON DELETE NO ACTION
ON UPDATE CASCADE;
Note if you d...
HTTP requests and JSON parsing in Python
...equests.get(link).text
# convert 'str' to Json
data = json.loads(data)
# Now you can access Json
for i in data['routes'][0]['legs'][0]['steps']:
lattitude = i['start_location']['lat']
longitude = i['start_location']['lng']
print('{}, {}'.format(lattitude, longitude))
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C++ Redefinition Header Files (winsock2.h)
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I'm not including <windows.h> at all, I know <winsock2.h> does its for me.
– akif
Sep 3 '09 at 11:26
2
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Spring @PropertySource using YAML
...go. It doesn't work with recent versions of Spring Boot. This is what I do now (please translate the Kotlin to Java if necessary):
@TestPropertySource(locations=["classpath:application.yml"])
@ContextConfiguration(
initializers=[ConfigFileApplicationContextInitializer::class]
)
is added t...
Change a Rails application to production
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This would now be
rails server -e production
Or, more compact
rails s -e production
It works for rails 3+ projects.
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Set mouse focus and move cursor to end of input using jQuery
... This works fine with FF and chrome but not in IE.. any one know how to solve this issue in IE ?
– john Smith
Sep 20 '12 at 13:35
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