大约有 13,300 项符合查询结果（耗时：0.0161秒） [XML]
Reading an Excel file in python using pandas
... Tid dummy1 dummy2 dummy3 dummy4 dummy5 \
0 2006-09-01 00:00:00 0 5.894611 0.605211 3.842871 8.265307
1 2006-09-01 01:00:00 0 5.712107 0.605211 3.416617 8.301360
2 2006-09-01 02:00:00 0 5.105300 0.605211 3.090865 8.335395
3 2006-09-01 03:...
How to extract epoch from LocalDate and LocalDateTime?
...is helpful is the field EPOCH_DAY which counts the elapsed days since 1970-01-01. Similar thoughts are valid for the type LocalDate (with even less supported fields).
If you intend to get the non-existing millis-since-unix-epoch field you also need the timezone for converting from a local to a glob...
Convert HH:MM:SS string to seconds only in javascript
...
This can be done quite resiliently with the following:
'01:02:03'.split(':').reduce((acc,time) => (60 * acc) + +time);
This is because each unit of time within the hours, minutes and seconds is a multiple of 60 greater than the smaller unit. Time is split into hour minutes a...
iPhone: How to get current milliseconds?
...
EI Captain v2.0
20.7k1010 gold badges7272 silver badges100100 bronze badges
answered Dec 11 '08 at 1:39
codelogiccodelogic
...
How to use greater than operator with date?
...se backtick instead
SELECT * FROM `la_schedule` WHERE `start_date` > '2012-11-18';
SQLFiddle Demo
share
|
improve this answer
|
follow
|
...
What's the fastest way to merge/join data.frames in R?
...child sys.child
3 data.table 1 0.34 1.000000 0.31 0.01 NA NA
2 plyr 1 0.44 1.294118 0.39 0.02 NA NA
1 merge 1 1.17 3.441176 1.10 0.04 NA NA
4 sqldf 1 3.34 9...
When to use single quotes, double quotes, and backticks in MySQL
...ts DATE and DATETIME literal values to be single-quoted as strings like '2001-01-01 00:00:00'. Consult the Date and Time Literals documentation for more details, in particular alternatives to using the hyphen - as a segment delimiter in date strings.
So using your example, I would double-quote the P...
How do I convert seconds to hours, minutes and seconds?
...multiple days: str(datetime.timedelta(seconds=60*60*24+1)) = '1 day, 0:00:01'
– hyprnick
Dec 29 '14 at 15:37
4
...
How to convert a unix timestamp (seconds since epoch) to Ruby DateTime?
...current system timezone):
$ date +%s
1318996912
$ irb
ruby-1.9.2-p180 :001 > require 'date'
=> true
ruby-1.9.2-p180 :002 > Time.at(1318996912).to_datetime
=> #<DateTime: 2011-10-18T23:01:52-05:00 (13261609807/5400,-5/24,2299161)>
Further update (for UTC):
ruby-1.9.2-p180...
Why is there extra padding at the top of my UITableView with style UITableViewStyleGrouped in iOS7
...] initWithFrame:CGRectMake(0.0f, 0.0f, self.tableView.bounds.size.width, 0.01f)];
I like this solution better than setting a somewhat arbitrary contentInset.top because I use the contentInset.top dynamically as well. Having to remember to remove an extra 35px whenever I recalculate contentInset.t...