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%d,%c,%s,%x等转换符 释义 - C/C++ - 清泛IT论坛，有思想、有深度
... %p 指针
%s 字符串 %S Unicode字符串（双字节）
%% "%"
2．标志
左对齐："-" e.g. "%-20s"
右对齐："+" e.g. "%+20s"
空格：若符号为正，则显示空格，负则显示"-" e.g. ...
How do I get the row count of a pandas DataFrame?
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14 Answers
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Is there any way to git checkout previous branch?
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edited Jul 20 '17 at 8:54
Unapiedra
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answered...
Find files containing a given text
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Andrew Schwartz
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answered May 27 '11 at 14:03
bear24rwbear24rw
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JPA eager fetch does not join
...ted Mar 21 '17 at 10:06
john16384
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answered Jun 18 '12 at 4:48
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:after vs. ::after
...ight.
Actually, better description here: http://bricss.net/post/10768584657/know-your-lingo-pseudo-class-vs-pseudo-element
Also here: http://www.evotech.net/blog/2007/05/after-v-after-what-is-double-colon-notation/
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Reasons for using the set.seed function
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These two, however, are identical because I set the seed:
R> set.seed(42); sample(LETTERS, 5)
[1] "X" "Z" "G" "T" "O"
R> set.seed(42); sample(LETTERS, 5)
[1] "X" "Z" "G" "T" "O"
R>
There is vast literature on all that; Wikipedia is a good start. In essence, these RNGs are called Pseudo...
How to modify a global variable within a function in bash?
...e number as the exit status:
mysecondfunc() {
echo "Hello"
return 4
}
var="$(mysecondfunc)"
num_var=$?
echo "$var - num is $num_var"
Gives:
Hello - num is 4
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Remove duplicate rows in MySQL
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edited Jul 24 '15 at 14:04
styvane
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Difference between @OneToMany and @ElementCollection?
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naXa
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answered Jan 23 '12 at 9:01
MrKianeMrKiane
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