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Using NSPredicate to filter an NSArray based on NSDictionary keys
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answered Jun 6 '09 at 0:18
surakensuraken
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How to get execution time in rails console?
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edited Jul 20 '19 at 4:28
Jeremy Baker
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Convert varchar to uniqueidentifier in SQL Server
...I have no control of the schema for, contains a column defined as varchar(50) which stores uniqueidentifiers in the format 'a89b1acd95016ae6b9c8aabb07da2010' (no hyphens)
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How to get numbers after decimal point?
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answered Mar 5 '12 at 5:02
lllluuukkelllluuukke
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Breaking loop when “warnings()” appear in R
... 1:3) {
cat(i, "\n")
as.numeric(c("1", "NA"))
}}
# warn = 0 (default) -- warnings as warnings!
j()
# 1
# 2
# 3
# Warning messages:
# 1: NAs introduced by coercion
# 2: NAs introduced by coercion
# 3: NAs introduced by coercion
# warn = 2 -- warnings as errors
options(warn=2)
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how do I initialize a float to its max/min value?
...west possible positive value. In other words the positive value closest to 0 that can be represented. The lowest possible value is the negative of the maximum possible value.
There is of course the std::max_element and min_element functions (defined in <algorithm>) which may be a better choic...
Bash script to calculate time elapsed
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CSS - Overflow: Scroll; - Always show vertical scroll bar?
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401
Just ran into this problem myself. OSx Lion hides scrollbars while not in use to make it seem m...
Write a function that returns the longest palindrome in a given string
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answered Oct 26 '13 at 0:32
AnujKuAnujKu
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Compute a confidence interval from sample data
...y as np
import scipy.stats
def mean_confidence_interval(data, confidence=0.95):
a = 1.0 * np.array(data)
n = len(a)
m, se = np.mean(a), scipy.stats.sem(a)
h = se * scipy.stats.t.ppf((1 + confidence) / 2., n-1)
return m, m-h, m+h
you can calculate like this way.
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