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How to run only one task in ansible playbook?
... role/stuff/tasks/main.yml
- name: do stuff
when: stuff|default(false)
Now, this task will not fire by default, but only if I set the stuff=true
$ ansible-playbook -e '{"stuff":true}'
or in a playbook:
roles:
- {"role":"stuff", "stuff":true}
...
jQuery find events handlers registered with an object
...e from the "public API" for data. Read this jQuery blog post. You should now use this instead:
jQuery._data( elem, "events" );
elem should be an HTML Element, not a jQuery object, or selector.
Please note, that this is an internal, 'private' structure, and shouldn't be modified. Use this for ...
How to change max_allowed_packet size
...
I think some would also want to know how to find the my.ini file on your PC. For windows users, I think the best way is as follows:
Win+R(shortcut for 'run'), type services.msc, Enter
You could find an entry like 'MySQL56', right click on it, select proper...
Current time in microseconds in java
...ave System.nanoTime(), but that just gives an offset from some previously known time. So whilst you can't take the absolute number from this, you can use it to measure nanosecond (or higher) precision.
Note that the JavaDoc says that whilst this provides nanosecond precision, that doesn't mean nano...
Install NPM into home directory with distribution nodejs package (Ubuntu)
...bout these packages
NODE_PATH="$NPM_PACKAGES/lib/node_modules:$NODE_PATH"
Now when you do an npm install -g, NPM will install the libraries into ~/.npm-packages/lib/node_modules, and link executable tools into ~/.npm-packages/bin, which is in your PATH.
Just use npm install -g as you would normally...
Clang vs GCC - which produces faster binaries? [closed]
...rtain)
comprises at present around 11K LOC in about 90 files. It is coded,
now, in C++ that is rich in polymorphism and templates and but is still
mired in many patches by its not-so-distant past in hacked-together C.
Move semantics are not expressly exploited. It is single-threaded. I
have devoted ...
Rebasing a Git merge commit
...bout what contents will be in that merge commit, we only need nice history now.
History will looks like that (ignoring master):
* 51984c7 Merge branch 'topic' [HEAD -> correct-history]
|\
| * b62cae6 2 [topic]
* | f5a7ca8 5 [origin/master]
* | e7affb...
How to do date/time comparison
... time.LoadLocation("UTC")
// setup a start and end time
createdAt := time.Now().In(loc).Add(1 * time.Hour)
expiresAt := time.Now().In(loc).Add(4 * time.Hour)
// get the diff
diff := expiresAt.Sub(createdAt)
fmt.Printf("Lifespan is %+v", diff)
The program outputs:
Lifespan is 3h0m0s
http://pla...
A fast method to round a double to a 32-bit int explained
...le is represented like this:
and it can be seen as two 32-bit integers; now, the int taken in all the versions of your code (supposing it's a 32-bit int) is the one on the right in the figure, so what you are doing in the end is just taking the lowest 32 bits of mantissa.
Now, to the magic num...
How to remove the arrow from a select element in Firefox
...
Okay, I know this question is old, but 2 years down the track and mozilla have done nothing.
I've come up with a simple workaround.
This essentially strips all formatting of the select box in firefox and wraps a span element aroun...