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How does an underscore in front of a variable in a cocoa objective-c class work?

...ng more than a common convention, but a useful one), then you need to do 1 extra thing so the auto-generated accessor (for the property) knows which ivar to use. Specifically, in your implementation file, your synthesize should look like this: @synthesize missionName = _missionName; More generic...
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What are the typical reasons Javascript developed on Firefox fails on IE? [closed]

...raising an exception. Base JavaScript language: Access characters in strings: 'string'[0] isn’t supported in IE as it’s not in the original JavaScript specifications. Use 'string'.charAt(0) or 'string'.split('')[0] noting that accessing items in arrays is significantly faster than using ch...
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How do I tell if a regular file does not exist in Bash?

... you are free to edit my post and add it to the list. I guess you mean: -n String - Check if the length of the string isn't zero. Or do you mean file1 -nt file2 - Check if file1 is newer then file 2 (you can also use -ot for older then) – BlueCacti May 5 '14 at...
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ASP.NET MVC Html.ValidationSummary(true) does not display model errors

...ages from ModelState. When there is some Exception in controller action on string 9 Answers ...
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Windows XP or later Windows: How can I run a batch file in the background with no window displayed?

... Possible, but I will try to avoid any extra step in this instance. – VonC Nov 18 '08 at 15:54 21 ...
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Most efficient way to cast List to List

...return statement, it is apparently fine to use it on an assignment, so the extra "result" variable solves this problem. (It should be optimized away either by the compiler or by the JIT anyway.) share | ...
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How to call a stored procedure from Java and JPA

... argumentValues); DatabaseRecord record = (DatabaseRecord) results.get(0); String result = String.valueOf(record.get("o_output_1")); // Get output parameter Using EclipseLink-2.5.0/JPA-2.1: Implementation-Independent (documented already in this thread) This method is implementation independent (d...
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Visibility of global variables in imported modules

...l = None if 'MYVAL' in os.environ: myval = os.environ['MYVAL'] As an extra precaution, handle the case when MYVAL is not defined inside the module. share | improve this answer | ...
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LINQ: Distinct values

...e("{0,-15} {1,-15}", row.Field<int>(0), row.Field<string>(1)); } share | improve this answer | follow | ...
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How do I get a div to float to the bottom of its container?

... Nope - this is not print publishing. There are some things that are extraordinarily difficult or impossible to accomplish using just html/css. – Traingamer Nov 25 '08 at 17:28 ...