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Gem::LoadError for mysql2 gem, but it's already in Gemfile
...e with a specific mysql version like below
gem 'mysql2', '~> 0.3.18'
Now stop the server and run bundle
bundle install
Now restart your server. It should work.
rails s
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Eclipse - debugger doesn't stop at breakpoint
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I upgraded to JDK 1.6 update 16. Now it stops at all the break points that I have set. Thanks a lot for your help.
– Roy
Sep 3 '09 at 2:43
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Have the same README both in Markdown and reStructuredText
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2019 Update
The PyPI Warehouse now supports rendering Markdown as well! You just need to update your package configuration and add the long_description_content_type='text/markdown' to it. e.g.:
setup(
name='an_example_package',
# other arguments o...
What is Bit Masking?
...ou could first do the mask, then the shift. The results are the same, but now you would have to use a different mask:
uint32_t byte3 = (value & 0xff00) >> 8;
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Get the _id of inserted document in Mongo database in NodeJS
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I don't know if this is general or only works in meteor, but when you call collection.insert(object), it returns the id of the inserted object right away.
– vantesllar
Oct 30 '16 at 20:45
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is there an virtual environment for node.js?
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Tested and confirmed now. npm install replaced npm bundle as of NPM 1.0, I believe.
– Marnen Laibow-Koser
Feb 11 '12 at 19:01
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Make header and footer files to be included in multiple html pages
...l
<a href="http://www.google.com">click here for google</a>
Now, when you visit index.html, you should be able to click the link tags.
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Understanding generators in Python
...u do not look into until you understand the basic concept of a generator.
Now you may ask: why use generators? There are a couple of good reasons:
Certain concepts can be described much more succinctly using generators.
Instead of creating a function which returns a list of values, one can write ...
How do I set a variable to the output of a command in Bash?
...myDate '2000-01-01'
946681200
myDate "$(ps ho lstart 1)" boottime
myDate now now ; read utm idl </proc/uptime
myBc "$now-$boottime" uptime
printf "%s\n" ${utm%%.*} $uptime
42134906
42134906
ps --tty pts/20 fw
PID TTY STAT TIME COMMAND
29019 pts/20 Ss 0:00 bash
30944 pt...
Can javax.persistence.Query.getResultList() return null?
...t it right?
No matter what, I would code defensively and check for null.
Now the big question: should we treat "null" and an empty List as synonymous? This is where the specs should help us, and don't.
My guess is that a null return (if indeed it could happen) would be equivalent to "I didn't un...