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What is ActiveMQ used for - can we apply messaging concept using a Database?

...that up communicating thousands of messages per second, Databases tend to fall over. Message-oriented middle-ware [MOM] like ActiveMQ on the other hand are built to handle those use cases. They assume that messages in a healthy system will be deleted very quickly and can do optimizations to avoid t...
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Fragment onCreateView and onActivityCreated called twice

...ment in the constructor seems to make the double onCreateView problem magically go away (I assume it just ends up being null for onTabSelected when called through the ActionBar.setSelectedNavigationItem() path when saving/restoring state). ...
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Does Firefox support position: relative on table elements?

... <div style="position:relative"> This will be positioned normally <div style="position:absolute; top:5px; left:5px;"> This will be positioned at 5,5 relative to the cell </div> </div> </td> ...
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jQuery removing '-' character from string

...in some other variable not part of the DOM, then you would likely want to call the .replace() function against that variable before you insert it into the DOM. Like this: var someVariable = "-123456"; $mylabel.text( someVariable.replace('-', '') ); or a more verbose version: var someVariable = ...
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Why can't Python's raw string literals end with a single backslash?

Technically, any odd number of backslashes, as described in the documentation . 12 Answers ...
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Start / Stop a Windows Service from a non-Administrator user account

...(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD) It lists all the permissions each User / Group on this computer has with regards to . A description of one part of above command is as follows: D:(A;;CCLCSWRPWPDTLOCRRC;;;SY) It has the default owner, default group, and it has...
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Using Git with an existing Xcode project

... Where is the bit about adding a .gitignore file to avoid adding all build directories and other crap as tracked files ??? – Fraggle Oct 12 '12 at 12:56 7 ...
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How many Activities vs Fragments?

...at most closely matches the tutorial mentioned in the question is the one called "Layout" in the app; or FragmentLayoutSupport in the source code. In this demo, the logic has been moved out of the Activity and into the Fragment. The TitlesFragment actually contains the logic for changing Fragments....
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How do you rotate a two dimensional array?

... One of my favorite SO answers of all time. Very instructive! – g33kz0r Apr 4 '13 at 2:49 3 ...
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What does the “-U” option stand for in pip install -U

...find any docs for pip's command line options/arguments. What does pip install -U mean? Does anyone have a link to a list of pip's options and arguments? ...