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MongoDB: Find a document by non-existence of a field?
...operator:
db.mycollection.find({ "price" : { "$exists" : false } })
and see its documentation.
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Javascript Array of Functions
..._function,
second_function,
third_function,
forth_function
]
and then when you want to execute a given function in the array:
array_of_functions[0]('a string');
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How to break out or exit a method in Java?
...case, a return statement can be used to branch out of a control flow block and exit the method and is simply used like this:
return;
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PostgreSQL query to return results as a comma separated list
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You can use the array() and array_to_string() functions togetter with your query.
With SELECT array( SELECT id FROM table ); you will get a result like: {1,2,3,4,5,6}
Then, if you wish to remove the {} signs, you can just use the array_to_string() ...
Resolve Type from Class Name in a Different Assembly
... answered Aug 18 '10 at 13:03
Sandor DrieënhuizenSandor Drieënhuizen
5,77044 gold badges3333 silver badges7777 bronze badges
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How to detect pressing Enter on keyboard using jQuery?
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I'm linking to this because I read this and left scratching my head over why keypress didn't work with IE. (it won't bind to $(window) under IE) quirksmode.org/dom/events/keys.html
– Incognito
Mar 2 '11 at 16:49
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Can I change the viewport meta tag in mobile safari on the fly?
....0, maximum-scale=1.0, user-scalable=0');
Just change the parts you need and Mobile Safari will respect the new settings.
Update:
If you don't already have the meta viewport tag in the source, you can append it directly with something like this:
var metaTag=document.createElement('meta');
metaT...
What is the actual use of Class.forName(“oracle.jdbc.driver.OracleDriver”) while connecting to a dat
What will the command
7 Answers
7
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Android Preferences: How to load the default values when the user hasn't used the preferences-screen
...s(this, R.xml.preference, false);
It will load your preferences from XML, and last parameter (readAgain) will guarantee that user preferences won't be overwritten. That means setting the readAgain argument to false means this will only set the default values if this method has never been called in ...
^M at the end of every line in vim
When I am editing source files using vim and other editors sometimes at the end of the line I get these ^M characters at the end of each line. I think that it has something to do with editing a file in windows and then in linux. How can I remove all of these automatically?
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