大约有 3,517 项符合查询结果（耗时：0.0123秒） [XML]
Is there a way to automatically build the package.json file for Node.js projects
...on's dependencies list.
(Note: You may need to manually tweak the version ranges for your dependencies.)
share
|
improve this answer
|
follow
|
...
How to set limits for axes in ggplot2 R plots?
...-5000, 5000))
Where the first removes all data points outside the given range and the second only adjusts the visible area. In most cases you would not see the difference, but if you fit anything to the data it would probably change the fitted values.
You can also use the shorthand function xlim...
Java 8 stream reverse order
...erating a reverse IntStream, try something like this:
static IntStream revRange(int from, int to) {
return IntStream.range(from, to)
.map(i -> to - i + from - 1);
}
This avoids boxing and sorting.
For the general question of how to reverse a stream of any type, I don't...
How to create a sub array from another array in Java?
...
You can use
JDK > 1.5
Arrays.copyOfRange(Object[] src, int from, int to)
Javadoc
JDK <= 1.5
System.arraycopy(Object[] src, int srcStartIndex, Object[] dest, int dstStartIndex, int lengthOfCopiedIndices);
Javadoc
...
python pandas remove duplicate columns
...values()
ks = dcols.keys()
lvs = len(vs)
for i in range(lvs):
for j in range(i+1,lvs):
if vs[i] == vs[j]:
dups.append(ks[i])
break
return dups
Use it like this:
dups = duplicate_columns(frame...
Vim delete blank lines
...
@soulmerge what about adding range 1,$/^\s$/d or using tags 'a,'b/^\s$/d? This does not work for me
– Alexander Cska
Jul 6 at 20:21
...
Best way to work with dates in Android SQLite [closed]
...
How would you handle querying date ranges?
– Joe
Jan 21 '12 at 6:25
53
...
内存优化总结:ptmalloc、tcmalloc和jemalloc - 操作系统(内核) - 清泛网 - ...
...16个table，每个5M row。
OLTP_RO测试包含5个select查询：select_ranges, select_order_ranges, select_distinct_ranges, select_sum_ranges,
可以看到在多核心或者多线程的场景下， jemalloc和tcmalloc带来的tps增加非常明显。
参考资料
glibc内存管理ptmalloc...
from list of integers, get number closest to a given value
...imeit -s "
from closest import take_closest
from random import randint
a = range(-1000, 1000, 10)" "take_closest(a, randint(-1100, 1100))"
100000 loops, best of 3: 2.22 usec per loop
$ python -m timeit -s "
from closest import with_min
from random import randint
a = range(-1000, 1000, 10)" "with_m...
How to remove items from a list while iterating?
...for tup in somelist[:]:
etc....
An example:
>>> somelist = range(10)
>>> for x in somelist:
... somelist.remove(x)
>>> somelist
[1, 3, 5, 7, 9]
>>> somelist = range(10)
>>> for x in somelist[:]:
... somelist.remove(x)
>>> somelist...