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MongoDB/NoSQL: Keeping Document Change History
...this yet. Looking back on it, the first option is probably the easiest and best solution, unless the overhead of duplicate data is very significant for your application. The second option is quite complex and probably isn't worth the effort. The third option is basically an optimization of option tw...
Is a Python list guaranteed to have its elements stay in the order they are inserted in?
.... Instead, sets are very useful any time one needs a collection containing items that cannot be repeated, and offer tools such as difference and intersection that are useful in modeling real life use cases.
– Pintun
Dec 15 '16 at 15:05
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How to print a string in fixed width?
...k like:
>>> dict_ = {'a': 1, 'ab': 1, 'abc': 1}
>>> for item in dict_.items():
... print 'value %3s - num of occurances = %d' % item # %d is the token of integers
...
value a - num of occurances = 1
value ab - num of occurances = 1
value abc - num of occurances = 1
SIDE ...
PowerShell and the -contains operator
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like is best, or at least easiest.
match is used for regex comparisons.
Reference: https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_comparison_operators?view=powershell-6
...
How do I remove version tracking from a project cloned from git?
... GitHub shell, but the shell can not recognize the parameter -rf of Remove-Item.
www.montanaflynn.me introduces the following shell command to remove all .git files one time, recursively! It's really working!
find . | grep "\.git/" | xargs rm -rf
...
Directive isolate scope with ng-repeat scope in AngularJS
...icture of what the scopes initially look like.
After clicking the first item, the scopes now look like this:
Notice that a new selected property was created on the ngRepeat scope. The controller scope 003 was not altered.
You can probably guess what happens when we click on the second item:
...
How to sort an array of objects by multiple fields?
...intain their old scores, and we all have to scroll down to find the "real" best solutions! SO should expire votes over time to address this, because the problem is getting ever worse as time passes.
– Andy Lorenz
Apr 29 at 17:42
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LINQ to SQL: Multiple joins ON multiple Columns. Is this possible?
... select new { Author = a.Author1,Title= t.Title1 };
foreach (var item in queryresults)
{
MessageBox.Show(item.Author);
MessageBox.Show(item.Title);
return;
}
sha...
How do I check for last loop iteration in Django template?
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You would use forloop.last. For example:
<ul>
{% for item in menu_items %}
<li{% if forloop.last %} class='last'{% endif %}>{{ item }}</li>
{% endfor %}
</ul>
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Deep copy of a dict in python
... the question:
In [7]: my_copy = {key: value[:] for key, value in my_dict.items()}
In [8]: id(my_copy['a'])
Out[8]: 140190444024176
Or you can use deepcopy as mentioned above.
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