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Javascript Thousand Separator / string format [duplicate]
...
this function breaks for numbers greater than 100,000
– DevZer0
Apr 28 '15 at 7:27
1
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How to generate random SHA1 hash to use as ID in node.js?
...in a given minute (a generous operation execution time), you will have 60*1000 or 60000 uniques.
The uniqueness of Math.random
Now, when using Math.random, because of the way JavaScript represents 64-bit floating point numbers, you'll get a number with length anywhere between 13 and 24 character...
How to query as GROUP BY in django?
...butes. From the docs:
cities = [
{'name': 'Mumbai', 'population': '19,000,000', 'country': 'India'},
{'name': 'Calcutta', 'population': '15,000,000', 'country': 'India'},
{'name': 'New York', 'population': '20,000,000', 'country': 'USA'},
{'name': 'Chicago', 'population': '7,000,000...
Is inject the same thing as reduce in ruby?
....size returns 4. Obviously 3 isn't an array, but beware of duck typing! (3_000_000_000_000_000.size returns 8 and 3_000_000_000_000_000_000_000_000_000_000_000_000_000_000.size returns 20; it seems to be the amount of memory it takes up.)
– ChrisPhoenix
Oct 15 ...
How to track down a “double free or corruption” error
...box]$ ./t1
*** glibc detected *** ./t1: double free or corruption (top): 0x00000000058f7010 ***
======= Backtrace: =========
/lib64/libc.so.6[0x3a3127245f]
/lib64/libc.so.6(cfree+0x4b)[0x3a312728bb]
./t1[0x400500]
/lib64/libc.so.6(__libc_start_main+0xf4)[0x3a3121d994]
./t1[0x400429]
======= Memory m...
Split Java String by New Line
... Any Unicode linebreak sequence, is equivalent to
\u000D\u000A|[\u000A\u000B\u000C\u000D\u0085\u2028\u2029]
So we can use it to match:
\u000D\000A -> \r\n pair
\u000A -> line feed (\n)
\u000B -> line tabulation (DO NOT confuse with character tabulation \t which i...
log4net hierarchy and logging levels
...
TraceLevel(Level.All); //-2147483648
TraceLevel(Level.Verbose); // 10 000
TraceLevel(Level.Finest); // 10 000
TraceLevel(Level.Trace); // 20 000
TraceLevel(Level.Finer); // 20 000
TraceLevel(Level.Debug); // 30 000
TraceLevel(Level.Fine); // 30 000
TraceL...
“Keep Me Logged In” - the best approach
...e that number is, let's imagine every server on the internet (let's say 50,000,000 today) trying to brute-force that number at a rate of 1,000,000,000 per second each. In reality your servers would melt under such load, but let's play this out.
guesses_per_second = servers * guesses
guesses_per_sec...
How do I create an average from a Ruby array?
... top solutions (in order of most efficient):
Large Array:
array = (1..10_000_000).to_a
Benchmark.bm do |bm|
bm.report { array.instance_eval { reduce(:+) / size.to_f } }
bm.report { array.sum.fdiv(array.size) }
bm.report { array.sum / array.size.to_f }
bm.report { array.reduce(:+).to_f / a...
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]) ...