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Is there a simple, elegant way to define singletons? [duplicate]
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I don't really see the need, as a module with functions (and not a class) would serve well as a singleton. All its variables would be bound to the module, which could not be instantiated repeatedly anyway.
If you do wish to use a cla...
How to grep a text file which contains some binary data?
... Yes, except that this won't work on OSX unless you do the following: LC_ALL="C" grep -a
– Chris Stratton
Feb 10 '19 at 18:05
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Continuous Integration for Ruby on Rails? [closed]
...he results. I came from a .NET shop that used CruiseControl.NET and was really spoiled with its ease of use and rich status/reporting.
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What is difference between sjlj vs dwarf vs seh?
...andling?
The Dwarf-2 EH implementation for Windows is not designed at all to
work under 64-bit Windows applications. In win32 mode, the exception
unwind handler cannot propagate through non-dw2 aware code, this means
that any exception going through any non-dw2 aware "foreign frames"
co...
unable to install pg gem
... me:
Install the postgresql-devel package, this will solve the issue of pg_config missing.
sudo apt-get install libpq-dev
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URL Encode a string in jQuery for an AJAX request
...codeURIComponent works fine for me. we can give the url like this in ajax call.The code shown below:
$.ajax({
cache: false,
type: "POST",
url: "http://atandra.mivamerchantdev.com//mm5/json.mvc?Store_Code=ATA&Function=Module&Module_Code=thub_connector&Module_Function=THUB_R...
How do I add 1 day to an NSDate?
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@quemeful extension Date { func adding(_ component: Calendar.Component, _ value: Int) -> Date? { return Calendar.current.date(byAdding: component, value: value, to: self) } } usage Date().adding(.day, 1) // "Jun 6, 2019 at 5:35 PM"
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Using logging in multiple modules
I have a small python project that has the following structure -
11 Answers
11
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Is it a good practice to use try-except-else in Python?
...o, the use of exceptions in Python does not slow the surrounding code and calling code as it does in some compiled languages (i.e. CPython already implements code for exception checking at every step, regardless of whether you actually use exceptions or not).
In other words, your understanding that...
How to select a single field for all documents in a MongoDB collection?
... include several fields. In the following operation, find() method returns all documents that match the query. In the result set, only the item and qty fields and, by default, the _id field return in the matching documents.
db.inventory.find( { type: 'food' }, { item: 1, qty: 1 } )
In this example ...