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What is the smallest possible valid PDF?
Out of simple curiosity, having seen the smallest GIF , what is the smallest possible valid PDF file?
4 Answers
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Why should I prefer single 'await Task.WhenAll' over multiple awaits?
In case I do not care about the order of task completion and just need them all to complete, should I still use await Task.WhenAll instead of multiple await ? e.g, is DoWork2 below a preferred method to DoWork1 (and why?):
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Declaration/definition of variables locations in ObjectiveC?
Ever since starting to work on iOS apps and objective C I've been really puzzled by the different locations where one could be declaring and defining variables. On one hand we have the traditional C approach, on the other we have the new ObjectiveC directives that add OO on top of that. Could you fo...
What's the difference between :: (double colon) and -> (arrow) in PHP?
There are two distinct ways to access methods in PHP, but what's the difference?
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When to use symbols instead of strings in Ruby?
If there are at least two instances of the same string in my script, should I instead use a symbol?
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How to define object in array in Mongoose schema correctly with 2d geo index
I'm currently having problems in creating a schema for the document below. The response from the server always returns the "trk" field values as [Object]. Somehow I have no idea how this should work, as I tried at least all approaches which made sense to me ;-)
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What are the differences between 'call-template' and 'apply-templates' in XSL?
I am new in XSLT so I'm little bit confused about the two tags,
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How can I select rows with most recent timestamp for each key value?
I have a table of sensor data. Each row has a sensor id, a timestamp, and other fields. I want to select a single row with latest timestamp for each sensor, including some of the other fields.
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