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Python loop that also accesses previous and next values

... The edited version of this is still not logically sound: At the end of the loop obj and next_ will be the same object for the last iteration, which may have unintended side effects. – TemporalWolf Dec 5 '17 at 22:01 ...
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What are attributes in .NET?

...ur objects/methods/properties. For example I might declare an Attribute called: DisplayOrder so I can easily control in what order properties should appear in the UI. I could then append it to a class and write some GUI components that extract the attributes and order the UI elements appropriately...
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Migration: Cannot add foreign key constraint

...signed(); $table->string('priority_name'); $table->smallInteger('rank'); $table->text('class'); $table->timestamps('timecreated'); }); Schema::table('priorities', function($table) { $table->foreign('user_id')->references('id')->on('...
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Prevent direct access to a php include file

...eople the trouble of Googling, if you're using Apache, put this in a file called ".htaccess" in the directory you don't want to be accessible: Deny from all If you actually have full control of the server (more common these days even for little apps than when I first wrote this answer), the best ...
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What is the difference between “long”, “long long”, “long int”, and “long long int” in C++?

...es <limits.h> are applicable. In terms of long double, that's actually a floating point value rather than an integer. Similarly to the integral types, it's required to have at least as much precision as a double and to provide a superset of values over that type (meaning at least those valu...
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Proper use of beginBackgroundTaskWithExpirationHandler

...l need to wrap it in a background task. It's also very important that you call endBackgroundTask when you're finished - otherwise the app will be killed after its allotted time has expired. Mine tend look something like this: - (void) doUpdate { dispatch_async(dispatch_get_global_queue(DISPAT...
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How to make a python, command-line program autocomplete arbitrary things NOT interpreter

...ts, i.e. --help, --verbose and --version. For your purposes, you'll essentially want to customise the values that are put into opts. Do have a look at the example on the linked page, it's all pretty straightforward. share ...
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Error: No default engine was specified and no extension was provided

...err }); lines in your code with: res.json({ error: err }) PS: People usually also have message in the returned object: res.status(err.status || 500); res.json({ message: err.message, error: err }); share | ...
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Thread-safe List property

... ConcurrentBag doesn't implement IList and is not actually thread safe version of List – Vasyl Zvarydchuk Apr 3 '17 at 20:55 ...
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How to declare string constants in JavaScript? [duplicate]

... There's no constants in JavaScript, but to declare a literal all you have to do is: var myString = "Hello World"; I'm not sure what you mean by store them in a resource file; that's not a JavaScript concept. ...