大约有 374 项符合查询结果（耗时：0.0185秒） [XML]
vim - How to delete a large block of text without counting the lines?
...he visual mode also (some commands are usable with the delete option also)
vip vap to select paragraph, v2ap to select two paragraphs
dap works, d2ap also. You can delete within blocks of [ ] like da[
For reference: the types of objects.
From vim documentation : section 4. http://vimdoc.sourcefor...
How do I specify local .gem files in my Gemfile?
...o cap deploy passed, but the gem wasn't installed "No such file to load -- vips" :/
– ddayan
Apr 13 '11 at 0:19
4
...
dplyr summarise: Equivalent of “.drop=FALSE” to keep groups with zero length in output
...
dplyr solution:
First make grouped df
by_b <- tbl_df(df) %>% group_by(b)
then we summarise those levels that occur by counting with n()
res <- by_b %>% summarise( count_a = n() )
then we merge our results into a data frame that contains all factor levels:
...
Can I set background image and opacity in the same property?
... moves slightly to the top. Does it have a fix?
– HFR1994
Apr 4 '16 at 18:25
6
...
HTTP 1.0 vs 1.1
...
HTTP 1.0 (1994)
It is still in use
Can be used by a client that cannot deal with chunked
(or compressed) server replies
HTTP 1.1 (1996- 2015)
Formalizes many extensions to version 1.0
Supports persistent and pipelined connect...
How to capture the “virtual keyboard show/hide” event in Android?
... addOnGlobalLayoutListener?
– coolcool1994
Jan 12 '14 at 2:20
7
This smells like a...
Ignoring time zones altogether in Rails and PostgreSQL
...l clients in different time zones.
For absolute global time:
SELECT * FROM tbl WHERE time_col > (now() AT TIME ZONE 'UTC')::time
For time according to the local clock:
SELECT * FROM tbl WHERE time_col > now()::time
Not tired of background information, yet? There is more in the manual.
...
How do you save/store objects in SharedPreferences on Android?
...ars? There are 3 of them in that link. . .
– coolcool1994
Jul 13 '14 at 6:13
3
The correct URL fo...
Cannot issue data manipulation statements with executeQuery()
...r> {
@Modifying
@Transactional
@Query(value = "DELETE FROM tbl_copy where trade_id = ?1 ; ", nativeQuery = true)
void deleteCopyByTradeId(Integer id);
}
It won't give the java.sql.SQLException: Can not issue data manipulation statements with executeQuery() error.
...
Adding a new SQL column with a default value
...documentation that you linked to:
ALTER [ONLINE | OFFLINE] [IGNORE] TABLE tbl_name
alter_specification [, alter_specification] ...
alter_specification:
...
ADD [COLUMN] (col_name column_definition,...)
...
To find the syntax for column_definition search a bit further down the page...