大约有 47,000 项符合查询结果（耗时：0.0980秒） [XML]
Vagrant ssh authentication failure
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answered Apr 8 '14 at 1:20
user3509054user3509054
7411 bronze badge
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Getting distance between two points based on latitude/longitude
...n, cos, sqrt, atan2, radians
# approximate radius of earth in km
R = 6373.0
lat1 = radians(52.2296756)
lon1 = radians(21.0122287)
lat2 = radians(52.406374)
lon2 = radians(16.9251681)
dlon = lon2 - lon1
dlat = lat2 - lat1
a = sin(dlat / 2)**2 + cos(lat1) * cos(lat2) * sin(dlon / 2)**2
c = 2 * ata...
Uri to default sound notification?
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edited Jun 30 '12 at 6:54
answered Jun 30 '12 at 6:37
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How do I delete rows in a data frame?
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A5C1D2H2I1M1N2O1R2T1A5C1D2H2I1M1N2O1R2T1
170k2424 gold badges348348 silver badges432432 bronze badges
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How to get the current time in milliseconds from C in Linux?
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Here is an example of how to use clock_gettime:
#define _POSIX_C_SOURCE 200809L
#include <inttypes.h>
#include <math.h>
#include <stdio.h>
#include <time.h>
void print_current_time_with_ms (void)
{
long ms; // Milliseconds
time_t s; // Seconds...
What is the Git equivalent for revision number?
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150
Good or bad news for you, that hash IS the revision number. I also had trouble with this when I...
How to install a gem or update RubyGems if it fails with a permissions error
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answered Jan 30 '13 at 15:36
the Tin Manthe Tin Man
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Load a UIView from nib in Swift
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edited Nov 25 '18 at 6:00
Alex Nolasco
16.2k88 gold badges6464 silver badges7171 bronze badges
answer...
What is Double Brace initialization in Java?
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edited Jun 2 '15 at 9:07
answered Dec 24 '09 at 16:40
B...
How to change href of tag on button click through javascript
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answered Dec 6 '10 at 10:09
Nick Craver♦Nick Craver
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