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find() with nil when there are no records
...in
user = User.find(10)
rescue ActiveRecord::RecordNotFound
puts "some error msg"
end
If you want to recover from the error in the rescue block (e.g. by setting a placeholder user (null pattern)), you can continue with your code below this block. Otherwise you might just put all your code for ...
Relative paths in Python
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When I run this in windows, I recieve an error: FileNotFoundError: [Errno 2] No such file or directory: '<path>' where <path> has the correct path segments but uses \\ for separators.
– lonstar
Jul 24 '19 at 5:09
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How can strings be concatenated?
...e results.
– tonfa
May 28 '11 at 15:05
3
The OP asked for Python 2.4 but about version 2.7, Hatem...
Label Alignment in iOS 6 - UITextAlignment deprecated
...ad design from Apple, and if they break it I would rather have compilation errors than risking that the alignment gets wrong without me noticing.
– Robin Andersson
Nov 14 '12 at 12:45
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Converting JSON data to Java object
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This will give error can not deserialize instance of java.util.HashSet out of START_OBJECT token
– Dipen Chawla
May 15 '19 at 8:24
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_=> what does this underscore mean in Lambda expressions?
...se V. KarlsenLasse V. Karlsen
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1
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What tools are there for functional programming in C?
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answered Aug 16 '17 at 17:05
Viktor ShepelViktor Shepel
15111 silver badge66 bronze badges
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Convert UTC date time to local date time
...local is little tricky.
For me, the date-time from web API is '2018-02-15T05:37:26.007' and I wanted to convert as per local timezone so I used below code in JavaScript.
var createdDateTime = new Date('2018-02-15T05:37:26.007' + 'Z');
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How do I choose grid and block dimensions for CUDA kernels?
... those limits, any kernel you can successfully compile will launch without error.
Performance Tuning:
This is the empirical part. The number of threads per block you choose within the hardware constraints outlined above can and does effect the performance of code running on the hardware. How each co...
undefined method `source_index' for Gem:Module (NoMethodError)
I'm running a Rails 2.3.5 application and upon running script/server I am shown the following:
5 Answers
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