大约有 5,500 项符合查询结果（耗时：0.0232秒） [XML]
ActiveRecord.find(array_of_ids), preserving order
...ql called FIELD()
Here is how you could use it in .find():
>> ids = [100, 1, 6]
=> [100, 1, 6]
>> WordDocument.find(ids).collect(&:id)
=> [1, 6, 100]
>> WordDocument.find(ids, :order => "field(id, #{ids.join(',')})")
=> [100, 1, 6]
For new Version
>> WordDo...
How Scalable is SQLite? [closed]
... others that have lots of traffic. They suggest that if you have less than 100k hits per day, SQLite should work fine. And that was written before they delivered the "Writeahead Logging" feature.
If you want to speed things up with SQLite, do the following:
upgrade to SQLite 3.7.x
Enable write-...
How to draw a line in android
...(Canvas canvas) {
super.onDraw(canvas);
startX = 20;
startY = 100;
stopX = 140;
stopY = 30;
canvas.drawLine(startX, startY, stopX, stopY, paint);
}
Drawing a Line with View
If you only need a straight horizontal or vertical line, then the easiest way may be to just use a...
How to detect the physical connected state of a network cable/connector?
...ported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
...
onMeasure custom view explanation
...ure(int widthMeasureSpec, int heightMeasureSpec) {
int desiredWidth = 100;
int desiredHeight = 100;
int widthMode = MeasureSpec.getMode(widthMeasureSpec);
int widthSize = MeasureSpec.getSize(widthMeasureSpec);
int heightMode = MeasureSpec.getMode(heightMeasureSpec);
int hei...
Twitter Bootstrap: div in container with 100% height
...e page with a nav bar, and inside the container I want to add a div with 100% height (to the bottom of the screen). My css-fu is rusty, and I can't work this out.
...
How to center a button within a div?
I have a div that's width is 100%.
14 Answers
14
...
Plot two histograms on single chart with matplotlib
... = [random.gauss(4,2) for _ in range(400)]
bins = numpy.linspace(-10, 10, 100)
pyplot.hist(x, bins, alpha=0.5, label='x')
pyplot.hist(y, bins, alpha=0.5, label='y')
pyplot.legend(loc='upper right')
pyplot.show()
share
...
Matplotlib plots: removing axis, legends and white spaces
...corner at the point located at (0 %, 0 %), and with a width and height of (100 %, 100 %).
– PhilMacKay
Jul 22 '13 at 19:40
...
Core pool size vs maximum pool size in ThreadPoolExecutor
... pool size is 1, core pool size is
5, max pool size is 10 and the queue is 100.
As requests come in,
threads will be created up to 5 and then tasks will be added to the
queue until it reaches 100. When the queue is full new threads will be
created up to maxPoolSize. Once all the threads are in use a...