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How do you build a Singleton in Dart?
...all when it's really a constructor definition. There's the _internal name. And there's the nifty language design point that Dart lets you start out (dart out?) using an ordinary constructor and then, if needed, change it to a factory method without changing all the callers.
– J...
Maven is not working in Java 8 when Javadoc tags are incomplete
Since I use Maven I have been able to build and install in my local repository projects that have incomplete Javadoc tags (for example, a missing parameter).
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Calculate the date yesterday in JavaScript
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@Zargold Don't understand what you mean. node --version v9.4.0 node const date = new Date() undefined > date.toISOString() '2018-02-10T16:26:30.821Z' > date.setDate(date.getDate() - 1) 1518193590821 > date.toISOString() '2018-02-09T16:...
How to know if an object has an attribute in Python
...at, if the property is likely to be there most of the time, simply call it and either let the exception propagate, or trap it with a try/except block. This will likely be faster than hasattr. If the property is likely to not be there most of the time, or you're not sure, using hasattr will probably ...
How to get just one file from another branch
I am using git and working on master branch. This branch has a file called app.js .
10 Answers
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How to format strings using printf() to get equal length in the output?
...o functions, one which produces messages like Starting initialization... and another which checks return codes and outputs "Ok" , "Warning" or "Error" . However, the output that is produced is of the different length:
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Collapsing Sidebar with Bootstrap
I just visited this page http://www.elmastudio.de/ and wondered if it is possible to build the left sidebar collapse with Bootstrap 3.
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Can I use a function for a default value in MySql?
... Note that as per the already linked docs in answer: ... stored functions, and user-defined functions are not permitted. I.e., the only functions that can be used as default expressions are built-in functions.
– asherbar
Mar 29 at 21:19
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How to update a single library with Composer?
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To install doctrine/doctrine-fixtures-bundle with version 2.1.* and minimum stability @dev use this:
composer.phar require doctrine/doctrine-fixtures-bundle:2.1.*@dev
then to update only this single package:
composer.phar update doctrine/doctrine-fixtures-bundle
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Find the last element of an array while using a foreach loop in PHP
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$numItems = count($arr) trick is not needed and reduces readability - in PHP there is no performance penalty for accessing count($arr) each time. The reason is that items count is internally saved as special field in the array header and is not calculated on-the-fly. T...