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Suppress Scientific Notation in Numpy When Creating Array From Nested List
... #digits wide
print(a) #prints [ 0.0000101 22. 12345678. ]
However if you pass in a number greater than 8 characters wide, exponential notation is imposed again, like this:
np.set_printoptions(suppress=True)
a = np.array([1.01e-5, 22, 1.2345678e10]) ...
When to use lambda, when to use Proc.new?
...l. Here is an example IRB session illustrating the difference:
irb(main):001:0> l = lambda { |x, y| x + y }
=> #<Proc:0x00007fc605ec0748@(irb):1>
irb(main):002:0> p = Proc.new { |x, y| x + y }
=> #<Proc:0x00007fc605ea8698@(irb):2>
irb(main):003:0> l.call "hello", "world"...
How to add new item to hash
...
It's as simple as:
irb(main):001:0> hash = {:item1 => 1}
=> {:item1=>1}
irb(main):002:0> hash[:item2] = 2
=> 2
irb(main):003:0> hash
=> {:item1=>1, :item2=>2}
...
How to convert a column number (e.g. 127) into an Excel column (e.g. AA)
.........0, 00, 000 :.. A, AA, AAA
....................................1, 01, 001 :.. B, AB, AAB
.................................... …, …, … :.. …, …, …
....................................9, 99, 999 :.. Z, ZZ, ZZZ
Total states in space: 10, 100, 1000 : 26, 676, 17576
Total States:........
adb not finding my device / phone (MacOS X)
...37 *
* daemon started successfully *
List of devices attached
123ABC456DEF001 device
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What resources are shared between threads?
...as based on was broken.
At least for user space.
From ntsd notepad: cs=001b ss=0023 ds=0023 es=0023
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Minimum and maximum date
...0-01-01Z00:00:00:000').getTime() //returns 0
new Date('1970-01-01Z00:00:00:001').getTime() //returns 1
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Ruby: Merging variables in to a string
...point out there is a real subtlety here to watch out for here:
2.0.0p247 :001 > first_name = 'jim'
=> "jim"
2.0.0p247 :002 > second_name = 'bob'
=> "bob"
2.0.0p247 :003 > full_name = '#{first_name} #{second_name}'
=> "\#{first_name} \#{second_name}" # not what we expected, ex...
What's the difference between emulation and simulation? [duplicate]
...lation -- suppose you have a very expensive thermometer that measures to 0.001 C, and you want to see if you can get by with a cheaper thermometer that only measures to the nearest 0.5 C. You can emulate the cheaper thermometer using an expensive thermometer by rounding the reading to the nearest 0....
How to remove a key from Hash and get the remaining hash in Ruby/Rails?
... of the following methods depending on your needs:
➜ ~ irb
1.9.3p125 :001 > require 'active_support/core_ext/hash' => true
1.9.3p125 :002 > h = {:a => 1, :b => 2, :c => 3}
=> {:a=>1, :b=>2, :c=>3}
1.9.3p125 :003 > h.except(:a)
=> {:b=>2, :c=>3}
1.9...