大约有 48,000 项符合查询结果（耗时：0.0565秒） [XML]
Align elements side by side
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Beau SmithBeau Smith
27k1010 gold badges7474 silver badges8484 bronze badges
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git still shows files as modified after adding to .gitignore
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SovietFrontier
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answered Jun 7 '18 at 9:19
Sidhanshu_Sidhanshu_
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LINQ - Left Join, Group By, and Count
...nd that worked for me.
– Joe
Dec 2 '10 at 1:35
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show 1 mo...
Sass calculate percent minus px
...d from one unit to the next. Sass has no way of knowing exactly how wide "100%" is in terms of pixels or any other unit. That's something only the browser knows.
You need to use calc() instead. Check browser compatibility on Can I use...
.foo {
height: calc(25% - 5px);
}
If your values ar...
vim command to restructure/force text to 80 columns
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answered Jun 13 '10 at 18:47
Michael MadsenMichael Madsen
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MySql: Tinyint (2) vs tinyint(1) - what is the difference?
... | a | b | c |
+-----+-----+-----+-----+
| 1 | 1 | 1 | 1 |
| 10 | 10 | 10 | 10 |
| 100 | 100 | 100 | 100 |
Here a, b and c are using TINYINT(1), TINYINT(2) and TINYINT(3) respectively. As you can see, it pads the values on the left side using the display width.
It's important to...
Emacs: print key binding for a command or list all key bindings
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edited May 17 '10 at 23:43
answered May 16 '10 at 23:39
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Count occurrences of a char in plain text file
...d f < file | wc -c
Time for this command with a file with 4.9 MB and 1100000 occurences of the searched character:
real 0m0.089s
user 0m0.057s
sys 0m0.027s
Time for Vereb answer with echo, cat, tr and bc for the same file:
real 0m0.168s
user 0m0.059s
sys 0m0.115s
Time for Ro...
How to increase the maximum number of opened editors in IntelliJ?
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answered Jan 14 '10 at 16:38
CrazyCoderCrazyCoder
331k126126 gold badges839839 silver badges763763 bronze badges
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Remove duplicated rows using dplyr
...ow:
library(dplyr)
set.seed(123)
df <- data.frame(
x = sample(0:1, 10, replace = T),
y = sample(0:1, 10, replace = T),
z = 1:10
)
One approach would be to group, and then only keep the first row:
df %>% group_by(x, y) %>% filter(row_number(z) == 1)
## Source: local data frame [...