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How to turn on line numbers in IDLE?

...t window, go to Options and click Show Line Numbers. To show them automatically, go to Options > Configure IDLE > General and check the Show line numbers in new windows box. Version 3.7 or older: Unfortunately there is not an option to display line numbers in IDLE although there is an enhancem...
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How to call a method after bean initialization is complete?

I have a use case where I need to call a (non-static) method in the bean only-once at the ApplicationContext load up. Is it ok, if I use MethodInvokingFactoryBean for this? Or we have a some better solution? ...
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How can I read large text files in Python, line by line, without loading it into memory?

...ines in reverse order is not as easy to do efficiently unfortunately. Generally you would want to read from the end of the file in sensible sized chunks (kilobytes to megabytes say) and split on newline characters ( or whatever the line ending char is on your platform) – John L...
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Why are two different concepts both called “heap”?

Why are the runtime heap used for dynamic memory allocation in C-style languages and the data structure both called "the heap"? Is there some relation? ...
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Why generate long serialVersionUID instead of a simple 1L?

...when trying to deserialize an object. If the ID is omitted, Java will actually calculate the ID for you based on fields of the object, but I believe it is an expensive process, so providing one manually will improve performance. Here's are a couple of links to articles which discuss serialization ...
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How to pick a new color for each plotted line within a figure in matplotlib?

...at the bottom of this answer: stackoverflow.com/questions/4805048/… Basically you just do this: [colormap(i) for i in np.linspace(0, 0.9, num_plots)], where colormap is one of the colormaps in matplotlib.pyplot.cm and numplots is the number of unique colors that you want. Beware that this can res...
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Using app.configure in express

... to the doc. In your example, the two piece of codes have no difference at all. http://expressjs.com/api.html#app.configure Update 2015: @IlanFrumer points out that app.configure is removed in Express 4.x. If you followed some outdated tutorials and wondering why it didn't work, You should remove ...
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Javascript infamous Loop issue? [duplicate]

...one with data- attributes, or something like jQuery's .data(). These generally solve the problems in that article (e.g. data- is reserved for users, so a future standard will never define a data-something attribute). – Matthew Flaschen Mar 15 '14 at 4:20 ...
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100% Min Height CSS layout

...prevent #container from scaling, this will work even if (or rather especially when) #content forces #container to become longer. Padding-bottom Since it is no longer in the normal flow, padding-bottom of #content now provides the space for the absolute #footer. This padding is inclu...
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How can I get jQuery to perform a synchronous, rather than asynchronous, Ajax request?

...nchronous option to be false to get a synchronous Ajax request. Then your callback can set some data before your mother function proceeds. Here's what your code would look like if changed as suggested: beforecreate: function (node, targetNode, type, to) { jQuery.ajax({ url: 'http://exa...