大约有 47,000 项符合查询结果（耗时：0.0680秒） [XML]
Responsive website zoomed out to full width on mobile
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edited Jun 30 '17 at 16:51
Cœur
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Why does substring slicing with index out of range work?
...s. Look what happens when you do the same thing to a list:
>>> [0, 1, 2, 3, 4, 5][3]
3
>>> [0, 1, 2, 3, 4, 5][3:4]
[3]
Here the difference is obvious. In the case of strings, the results appear to be identical because in Python, there's no such thing as an individual character ...
What is an .axd file?
...source.axd
– Kiquenet
Nov 4 '15 at 10:22
add a comment
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How can I see the specific value of the sql_mode?
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| @@sql_mode |
+------------+
| |
+------------+
1 row in set (0.00 sec)
mysql> set sql_mode=ORACLE;
Query OK, 0 rows affected (0.00 sec)
mysql> SELECT @@sql_mode;
+-------------------------------------------------------------------------------------------------------------------...
Pandas aggregate count distinct
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How about either of:
>>> df
date duration user_id
0 2013-04-01 30 0001
1 2013-04-01 15 0001
2 2013-04-01 20 0002
3 2013-04-02 15 0002
4 2013-04-02 30 0002
>>> df.groupby("date").agg({"duration": np.sum, "user_id...
Add leading zeroes to number in Java? [duplicate]
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1330
String.format (https://docs.oracle.com/javase/1.5.0/docs/api/java/util/Formatter.html#syntax)
I...
Using {} in a case statement. Why?
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Macke
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answered Nov 17 '13 at 13:25
RotemRotem
19.2k66 gold badge...
Why is rbindlist “better” than rbind?
...es where one has factor and other has character type for a column (Bug #2650)
It has problems with duplicate column names
see
Warning message: in rbindlist(allargs) : NAs introduced by coercion: possible bug in data.table? (Bug #2384)
rbind.data.frame rownames can be frustrating
rbindlist ca...
How to npm install to a specified directory?
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340
You can use the --prefix option:
mkdir -p ./install/here/node_modules
npm install --prefix ./in...
Fragment transaction animation: slide in and slide out
...ation XML files in res > anim
enter_from_left.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false">
<translate
android:fromXDelta="-100%p" android:toXDelta="0%"
android:fro...