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How to format numbers by prepending 0 to single-digit numbers?

I want to format a number to have two digits. The problem is caused when 0 – 9 is passed, so I need it to be formatted to 0009 . ...
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How to implement has_many :through relationships with Mongoid and mongodb?

... | edited Aug 13 '11 at 20:31 answered Aug 13 '11 at 20:06 ...
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Checking out Git tag leads to “detached HEAD state”

...git project and I just started using tags. I've added a new tag called v2.0 : 2 Answers ...
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Append a NumPy array to a NumPy array

... answered Mar 19 '12 at 18:01 endolithendolith 19.6k2424 gold badges107107 silver badges170170 bronze badges ...
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Are HTTP cookies port specific?

... The current cookie specification is RFC 6265, which replaces RFC 2109 and RFC 2965 (both RFCs are now marked as "Historic") and formalizes the syntax for real-world usages of cookies. It clearly states: Introduction ... For historical reasons, cookies contain a number of...
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Convert varchar to uniqueidentifier in SQL Server

...I have no control of the schema for, contains a column defined as varchar(50) which stores uniqueidentifiers in the format 'a89b1acd95016ae6b9c8aabb07da2010' (no hyphens) ...
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How to count duplicate value in an array in javascript

...]; array_elements.sort(); var current = null; var cnt = 0; for (var i = 0; i < array_elements.length; i++) { if (array_elements[i] != current) { if (cnt > 0) { document.write(current + ' comes --> ' + cnt + ' times<br>'); ...
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efficient circular buffer?

... 206 I would use collections.deque with a maxlen arg >>> import collections >>> d...
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How can I have two fixed width columns with one flexible column in the center?

...sing width (which is a suggestion when using flexbox), you could use flex: 0 0 230px; which means: 0 = don't grow (shorthand for flex-grow) 0 = don't shrink (shorthand for flex-shrink) 230px = start at 230px (shorthand for flex-basis) which means: always be 230px. See fiddle, thanks @TylerH Oh...
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Why use softmax as opposed to standard normalization?

... 170 There is one nice attribute of Softmax as compared with standard normalisation. It react to lo...