大约有 35,432 项符合查询结果（耗时：0.0472秒） [XML]
Setting custom UITableViewCells height
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502
Your UITableViewDelegate should implement tableView:heightForRowAtIndexPath:
Objective-C
- (C...
How can I check whether a numpy array is empty or not?
...e a look at the .size attribute. It is defined as an integer, and is zero (0) when there are no elements in the array:
import numpy as np
a = np.array([])
if a.size == 0:
# Do something when `a` is empty
share
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IntelliJ gives Fatal Error: Unable to find package java.lang in classpath or bootclasspath
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answered Jun 15 '10 at 22:32
BrigBrig
9,0661010 gold badges4141 silver badges6767 bronze badges
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JavaScript: empty array, [ ] evaluates to true in conditional structures. Why is this?
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109
From http://www.sitepoint.com/javascript-truthy-falsy/
The following values are always falsy:
...
How do I choose grid and block dimensions for CUDA kernels?
... They can be roughly summarized as:
Each block cannot have more than 512/1024 threads in total (Compute Capability 1.x or 2.x and later respectively)
The maximum dimensions of each block are limited to
[512,512,64]/[1024,1024,64] (Compute 1.x/2.x or later)
Each block cannot consume more than 8k/16k...
What is the “main file” property when doing bower init?
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60
According to the Bower.io documentation
main
Recommended Type: String or Array of ...
Using @include vs @extend in Sass?
... background-color: $main-color
border: 1px solid black
border-radius: 0.2em
&:hover, &:active
background-color: $active-color
a
+button
button
+button(pink, red)
Results in:
a {
background-color: lightgrey;
border: 1px solid black;
border-radius: 0.2em;
}
a:hover,...
What do linkers do?
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answered Jul 23 '10 at 23:04
IcemanindIcemanind
42k4343 gold badges153153 silver badges269269 bronze badges
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Resize Google Maps marker icon image
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If the original size is 100 x 100 and you want to scale it to 50 x 50, use scaledSize instead of Size.
var icon = {
url: "../res/sit_marron.png", // url
scaledSize: new google.maps.Size(50, 50), // scaled size
origin: new google.maps.Poi...
Bash tool to get nth line from a file
...re NUM is the number of the line you want to print; so, for example, sed '10q;d' file to print the 10th line of file.
Explanation:
NUMq will quit immediately when the line number is NUM.
d will delete the line instead of printing it; this is inhibited on the last line because the q causes the res...