大约有 15,000 项符合查询结果（耗时：0.0190秒） [XML]
CSS Box Shadow - Top and Bottom Only [duplicate]
...lue to <= the negative of the spread value (ex. inset 0px 5px -?px 5px #000; the blur value should be -5 and lower) and to also keep the blur value > 0 when subtracted from the primary positioning value (ex. using the example from above, the blur value should be -9 and up, thus giving us an op...
Replace duplicate spaces with a single space in T-SQL
...ns though while loop that, in personal experience, having it run though 50,000 records of a table tends to be very slow, so you need to create it as a procedure and pass in a record and some jobs you may not have permission to create a band new procedure. Neil's uses per-existing functions because i...
CSS text-overflow: ellipsis; not working?
...tion: none;
text-overflow: ellipsis;
white-space: nowrap;
color: #000;
}
<div class="app">
<a href="">Test Test Test Test Test Test</a>
</div>
Useful references:
https://developer.mozilla.org/en-US/docs/Web/CSS/text-overflow
https://developer.mozilla.o...
Find the most frequent number in a numpy vector
...here:
>>> # small array
>>> a = [12,3,65,33,12,3,123,888000]
>>>
>>> import collections
>>> collections.Counter(a).most_common()[0][0]
3
>>> %timeit collections.Counter(a).most_common()[0][0]
100000 loops, best of 3: 11.3 µs per loop
>>&...
Copy array items into another array
...a new array.
However, it seems that for large arrays (of the order of 100,000 members or more), this trick can fail. For such arrays, using a loop is a better approach. See https://stackoverflow.com/a/17368101/96100 for details.
var newArray = [];
newArray.push.apply(newArray, dataArray1);
newArra...
Does MySQL index foreign key columns automatically?
... index". I tried to drop it but I got the following error: "ERROR 1553 (HY000): Cannot drop index 'index_name': needed in a foreign key constraint". So, it's not possible to drop that index and keep the foreign key.
– Ciprian Stoica
Oct 20 '15 at 10:11
...
How might I find the largest number contained in a JavaScript array?
...ou're talking millions of indices.
Average results of five runs with a 100,000-index array of random numbers:
reduce took 4.0392 ms to run
Math.max.apply took 3.3742 ms to run
sorting and getting the 0th value took 67.4724 ms to run
Math.max within reduce() took 6.5804 ms to run
custom findmax func...
Finding duplicate values in MySQL
...hanks for that but on large table it takes some time (about 2mn on more 20'000 entries table) and after show 25 first results, if I click to show next one, phpmyadmin show error "#1052 - Column 'id' in order clause is ambiguous"
– bcag2
Apr 24 at 8:44
...
Element-wise addition of 2 lists?
...how to do this in pure python. If you want to do this with arrays with 100.000 elements, you should use numpy:
In [1]: import numpy as np
In [2]: vector1 = np.array([1, 2, 3])
In [3]: vector2 = np.array([4, 5, 6])
Doing the element-wise addition is now as trivial as
In [4]: sum_vector = vector1 ...
IIS does not list a website that matches the launch url
... #@$%ing Run as Administrator has probably cost us developers about 400,000 years in lost development time over the last 6 or 7 years
– joshcomley
Dec 11 '12 at 0:21
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