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Run a string as a command within a Bash script
...rameters so I ended up with something like:
my_exe ()
{
mysql -sN -e "select $1 from heat.stack where heat.stack.name=\"$2\";"
}
This is something I use to monitor openstack heat stack creation. In this case I expect two conditions, an action 'CREATE' and a status 'COMPLETE' on a stack named ...
How to check null objects in jQuery
...
You can use the length property of the jQuery collection returned by your selector:
if ( $('#myDiv').length ){}
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Eclipse / Android : “Errors running builder 'Android Pre Compiler' on project…”
... disconnected it from my libraries (through Properties -> Android -> select library then click Remove) and the original project errors went away. YAY!
– Azurespot
Jun 21 '14 at 6:49
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Properly removing an Integer from a List
... is equal to Integer(1) will be removed. In both cases, the Java compiler selects the closest matching overload.
Yes, there is potential for confusion (and bugs) here, but it is a fairly uncommon use-case.
When the two List.remove methods were defined in Java 1.2, the overloads were not ambiguous...
Visual Studio: Is there a way to collapse all items of Solution Explorer?
...stalled, you can right click on the solution in the solution explorer, and select "Collapse All".
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How can I compare two dates in PHP?
... return the result, without any problems depending on the used Date-Types
SELECT IF(expireDate < NOW(),TRUE,FALSE) as isExpired FROM tableName
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How to remove constraints from my MySQL table?
...an show the names of the foreign keys by using this query, as shown here:
SELECT CONSTRAINT_NAME FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
WHERE REFERENCED_TABLE_SCHEMA = '<database>' AND REFERENCED_TABLE_NAME = '<table>';
Then remove the foreign key by running the before mentioned DR...
What is causing this error - “Fatal error: Unable to find local grunt”
.... Use grunt:init, which gives you options such as jQuery, node,commonjs. Select what you want, then proceed. This really works. For more information you can visit this.
Do this:
1. npm install -g grunt
2. grunt:init ( you will get following options ):
jquery: A jQuery plugin
nod...
How do you remove Subversion control for a folder?
...n that folder for .svn and that will list them all. Pressing Ctrl + A will select all of them and pressing delete will remove all the 'pesky' Subversion stuff.
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Image Segmentation using Mean Shift explained
...tropic configuration:
At this time, it should be clear that you can't select how many "colors" you get after applying Mean Shift. So, let's show how to do it, because that is the second part of your question.
What you need to be able to set the number of output clusters in advance is somethi...