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Are nullable types reference types?
...alues:
The value of the data type (int for int?, DateTime for DateTime?, etc.).
A boolean value which tells if the data type value has been set. (HasValue is the property.)
When you set the value of the data type, the struct changes HasValue to true.
Nullable types (C# Programming Guide)
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How to listen for changes to a MongoDB collection?
...? don't use polling - you need an evented approach instead of while loops, etc.
– Alexander Mills
Mar 17 '18 at 4:17
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Is there a way to list pip dependencies/requirements?
... Simple generic functions (similar to Python's own len(), pickle.dump(), etc.)
└── traitlets>=4.2 Traitlets Python config system
├── decorator Better living through Python with decorators
├── ipython-genutils Vestigial utilities ...
I lose my data when the container exits
...nkins home into a volume to be able to access it from the outside (backups etc).
– ZeissS
Feb 23 '15 at 11:33
7
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How to use Comparator in Java to sort
... there are many attributes one can compare on: age, length, gender, names, etc. In that case, it's easy to provide a couple of comparators that perform these comparisons.
– Bart Kiers
Jan 19 '14 at 19:46
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How to generate an entity-relationship (ER) diagram using Oracle SQL Developer
...oesn't display all the tables, but it displays other objects such as views etc. Any ideas ?
– SUN Jiangong
Dec 28 '12 at 16:12
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Polymorphism: Why use “List list = new ArrayList” instead of “ArrayList list = new ArrayList”? [dupl
...he whole benefit comes when exposing a List to other methods or libraries, etc.
– GreenieMeanie
Mar 29 '12 at 16:28
5
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How to detect IE11?
...e that IE 8 and lower remain the primary problem apps. Testing for window.getComputedStyle will give you a fairly good mix of modern browsers, as well (IE 9, FF 4, Chrome 11, Safari 5, Opera 11.5). IE 9 greatly improves on standards support, but native CSS animation requires IE 10.
var isModernBrows...
HTTP authentication logout via PHP
...nce of state stored on the server in some manner (mysql, sqlite, flatfile, etc). This will require all requests to be evaluated, for instance, with PHP.
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Get lengths of a list in a jinja2 template
...k: {% set item_count = items | length %} as long as items is a list, dict, etc.
– kbolino
May 14 '19 at 17:51
Thanks @...