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npm can't find package.json
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lealceldeiro
11.9k33 gold badges3131 silver badges6363 bronze badges
answered Jun 7 '16 at 19:22
Deepali AgarwalDe...
Java; String replace (using regular expressions)?
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edited Mar 11 '09 at 16:10
answered Mar 10 '09 at 20:50
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Random string generation with upper case letters and digits
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@shakthydoss: no. It may return "AAA000", which is a random string, and next "AAA000", which is also a random string. You must explicitly add a check for uniqueness.
– usr2564301
Mar 2 '18 at 11:15
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How to map and remove nil values in Ruby
...nchmarks against some of the earlier approaches to this problem:
N = 1_00_000
enum = 1.upto(1_000)
Benchmark.bmbm do |x|
x.report("select + map") { N.times { enum.select { |i| i.even? }.map{|i| i + 1} } }
x.report("map + compact") { N.times { enum.map { |i| i + 1 if i.even? }.compact } }
x.r...
How to comment out a block of code in Python [duplicate]
...hat's a "hash" sign.
– edam
Oct 31 '11 at 14:36
73
in Notepad++ that's Ctrl+K (v.5.9.2) for any s...
In-App Billing test: android.test.purchased already owned
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Aashutosh SharmaAashutosh Sharma
1,45311 gold badge1717 silver badges2828 bronze badges
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Moving average or running mean
...msum[:-N]) / float(N)
The code to check
In[3]: x = numpy.random.random(100000)
In[4]: N = 1000
In[5]: %timeit result1 = numpy.convolve(x, numpy.ones((N,))/N, mode='valid')
10 loops, best of 3: 41.4 ms per loop
In[6]: %timeit result2 = running_mean(x, N)
1000 loops, best of 3: 1.04 ms per loop
N...
mysql update column with value from another table
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Community♦
111 silver badge
answered Oct 13 '13 at 14:35
RafaSashiRafaSashi
13.2k88 gold ...
How does Stack Overflow generate its SEO-friendly URLs?
... the case where you start with 80 spaces...). And a rough benchmark of 10,000,000 iterations against Jeff's code showed it to be roughly the same speed.
– Tom Chantler
Nov 17 '11 at 23:34
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How do you match only valid roman numerals with a regular expression?
...ecifies the thousands section and basically restrains it to between 0 and 4000. It's a relatively simple:
0: <empty> matched by M{0}
1000: M matched by M{1}
2000: MM matched by M{2}
3000: MMM matched by M{3}
4000: MMMM matched by M{4}
You could, of course, use some...