大约有 3,516 项符合查询结果（耗时：0.0222秒） [XML]
What are the advantages of using the C++ Boost libraries? [closed]
...ively because:
It is open-source and peer-reviewed.
It provides a wide range of platform agnostic functionality that STL missed.
It is a complement to STL rather than a replacement.
Many of Boost developers are on the C++ standard committee. In fact, many parts of Boost is considered to be inclu...
Visual Studio debugging “quick watch” tool and lambda expressions
...sions, which take the form .Where("Id = @0", 2) - it doesn't have the full range of methods available in standard Linq, and doesn't have the full power of lambda expressions, but still, it's better than nothing!
share
...
Create numpy matrix filled with NaNs
...etup=lambda n: n,
kernels=[fill, colon, full, ones_times, list],
n_range=[2 ** k for k in range(20)],
logx=True,
logy=True,
xlabel="len(a)",
)
share
|
improve this answer
...
How to request a random row in SQL?
...xed. One caveat: this assumes that num_value is equally distributed in the range 0..MAX(num_value). If your dataset strongly deviates from this assumption, you will get skewed results (some rows will appear more often than others).
...
Invalid default value for 'create_date' timestamp field
...
TIMESTAMP has a range of '1970-01-01 00:00:01' UTC to '2038-01-19 03:14:07' UTC (see doc). The default value must be within that range.
Other odd, related, behavior:
CREATE TABLE tbl1 (
ts TIMESTAMP);
Query OK, 0 rows affected (0....
random.seed(): What does it do?
...erstand random.seed() importance
import random
random.seed(10)
for i in range(5):
print(random.randint(1, 100))
Execute the above program multiple times...
1st attempt: prints 5 random integers in the range of 1 - 100
2nd attempt: prints same 5 random numbers appeared in the above exe...
How to change language settings in R
... that interact in complex and intransparent ways.
– 0range
Mar 31 at 13:27
@0range did you try cd \ and dir Rconsole ...
What is the maximum length of latitude and longitude? [closed]
...to 6 decimal places for 10 cm (or 0.1 meter) precision.
Overview
The valid range of latitude in degrees is -90 and +90 for the southern and northern hemisphere respectively. Longitude is in the range -180 and +180 specifying coordinates west and east of the Prime Meridian, respectively.
For referenc...
Ignore outliers in ggplot2 boxplot
...ntinuous(limits = quantile(dfr$y, c(0.1, 0.9)))
p2 # no outliers plotted, range shifted
Actually, as Ramnath showed in his answer (and Andrie too in the comments), it makes more sense to crop the scales after you calculate the statistic, via coord_cartesian.
coord_cartesian(ylim = quantile(dfr$y...
Dynamically updating plot in matplotlib
....pyplot as plt
plt.ion()
class DynamicUpdate():
#Suppose we know the x range
min_x = 0
max_x = 10
def on_launch(self):
#Set up plot
self.figure, self.ax = plt.subplots()
self.lines, = self.ax.plot([],[], 'o')
#Autoscale on unknown axis and known lims ...