大约有 47,000 项符合查询结果（耗时：0.0687秒） [XML]
how to run two commands in sudo?
...ample:
$ sudo -s -- 'whoami; whoami'
root
root
Your command would be something like:
sudo -u db2inst1 -s -- "db2 connect to ttt; db2 UPDATE CONTACT SET EMAIL_ADDRESS = 'mytestaccount@gmail.com'"
If your sudo version doesn't work with semicolons with -s (apparently, it doesn't if compiled wit...
How to prevent UINavigationBar from covering top of view in iOS 7?
...the navigation bars in all of my app's views have shifted down. Here are some screenshots, the first showing everything in the view as it's pulled down, and the second showing all of it untouched. The search bar should begin where the navigation bar.
...
How do I get an empty array of any size in python?
...
If by "array" you actually mean a Python list, you can use
a = [0] * 10
or
a = [None] * 10
share
|
improve this answer
|
...
Get a pixel from HTML Canvas?
...
There's a section about pixel manipulation in the W3C documentation.
Here's an example on how to invert an image:
var context = document.getElementById('myCanvas').getContext('2d');
// Get the CanvasPixelArray from the given coordinates and dimensions.
var imgd = context.getImage...
How to parse float with two decimal places in javascript?
...
|
show 2 more comments
51
...
Breadth First Vs Depth First
...rk all the way across each level before going down.
(Note that there is some ambiguity in the traversal orders, and I've cheated to maintain the "reading" order at each level of the tree. In either case I could get to B before or after C, and likewise I could get to E before or after F. This may or...
Find value in an array
...3,4,5]
a.include?(3) # => true
a.include?(9) # => false
If you mean something else, check the Ruby Array API
share
|
improve this answer
|
follow
|...
How to count instances of character in SQL Column
...ring then this could be inaccurate. See nickf's solution for a more robust method.
– Tom H
Dec 7 '09 at 15:28
add a comment
|
...
How do I redirect to the previous action in ASP.NET MVC?
Lets suppose that I have some pages
10 Answers
10
...
How to check if array element exists or not in javascript?
...
Use typeof arrayName[index] === 'undefined'
i.e.
if(typeof arrayName[index] === 'undefined') {
// does not exist
}
else {
// does exist
}
share
|
...