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Converting integer to binary in python
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>>> '{0:08b}'.format(6)
'00000110'
Just to explain the parts of the formatting string:
{} places a variable into a string
0 takes the variable at argument position 0
: adds formatting options for this variable (otherwise it would repre...
Best architectural approaches for building iOS networking applications (REST clients)
... forget about the persistence (it can significantly increase your app's performance). You can use Core Data for this. But you should not forget, that Core Data is not an ORM or a database, but an object graph manager with persistence as a good option of it. So, very often Core Data can be too heavy ...
How to detect input type=file “change” for the same file?
...he change event fire to post to the server. My example uses the the jQuery form plugin.
$('input[type=file]').click(function(){
$(this).attr("value", "");
})
$('input[type=file]').change(function(){
$('#my-form').ajaxSubmit(options);
})
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How is a CRC32 checksum calculated?
...re $1+1=0$. By putting the cofficients be in a field, then the polynomials form what is called a Euclidean Domain, which basically just allows what we're trying to do to be well-defined in the first place.
– calavicci
Nov 10 '15 at 23:11
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CSS3 :unchecked pseudo-class
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This isn't always possible. Form elements in particular are notorious for not allowing you to revert them to their default look and feel via cascading rules. (Though why anyone would want to give only checked or only unchecked inputs a custom look and f...
Which is faster/best? SELECT * or SELECT column1, colum2, column3, etc
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It still matters, because the select list is a form of contract, expecially if the SQL is in a stored procedure.
– Eric Z Beard
Sep 15 '08 at 23:22
4
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The calling thread must be STA, because many UI components require this
... Thanks. This will help when using Applicationcontext class instead of Form.
– SaddamBinSyed
Oct 23 '19 at 5:55
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How to determine if binary tree is balanced?
...ification for the function you are trying to write.
Specification: A well-formed binary tree is said to be "height-balanced" if (1) it is empty, or (2) its left and right children are height-balanced and the height of the left tree is within 1 of the height of the right tree.
Now that you have the...
How to delete an item in a list if it exists?
I am getting new_tag from a form text field with self.response.get("new_tag") and selected_tags from checkbox fields with
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Is there a good jQuery Drag-and-drop file upload plugin? [closed]
...llows including a single JS script then using a simple snippet to enable a form? Something like this:
8 Answers
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