大约有 7,400 项符合查询结果（耗时：0.0276秒） [XML]
Is there a C++ gdb GUI for Linux? [closed]
...Create a new project, "Import of Makefile-based Project".
Point it to your root project folder (it will index sources under it, and it is impressively fast).
Go to project settings and add a run configuration, then specify the executable you want to debug, and its arguments.
Qt Creator seems to insi...
Sending a message to nil in Objective-C
...
The recent OSX root exploit/hidden backdoor api is accessible for all users (not just admins) because of obj-c's Nil messaging.
– dcow
Apr 20 '15 at 15:58
...
What does a \ (backslash) do in PHP (5.3+)?
...a lot faster. However this only works when the functions are placed in the root namespace. See this discussion about this topic. So besides namespacing, the \ indirectly also affects code optimisation.
The following native functions benefit from this effect:
"array_slice"
"assert"
"boolval"
"call_...
How can you determine a point is between two other points on a line segment?
...
The length of the segment is not important, thus using a square root is not required and should be avoided since we could lose some precision.
class Point:
def __init__(self, x, y):
self.x = x
self.y = y
class Segment:
def __init__(self, a, b):
self.a = a...
How can I generate a unique ID in Python? [duplicate]
... and I couldn't reopen the port later. I'd have to manually kill uuidd as root. I worked around this by setting uuid._uuid_generate_time and uuid._uuid_generate_random to None so the uuid module never used the native implementation. (That should really be an option anyway; generating V4 random UU...
How does the getView() method work when creating your own custom adapter?
...later is used to get the View object which you define in a layout xml (the root object, normally a LinearLayout,
FrameLayout, or RelativeLayout)
convertView is for recycling. Let's say you have a listview which can only display 10 items at a time, and currently it is
displaying item 1 -> item 10....
cd into directory without having permission
...change the permissions so that you can access it (or you'll need help from root to change the permissions for you).
share
|
improve this answer
|
follow
|
...
Unique fields that allow nulls in Django
...
For my project, I dumped this into an extras.py file that lives in the root of my site, then I can just from mysite.extras import CharNullField in my app's models.py file. The field acts just like a CharField - just remember to set blank=True, null=True when declaring the field, or otherwise Dj...
How to generate Javadoc HTML files in Eclipse?
...stination: field, browse to find the desired destination (for example, the root directory of the current project).
Click Finish.
You should now be able to find the newly generated Javadoc in the destination folder.
Open index.html.
...
RuntimeWarning: invalid value encountered in divide
...f zeros. The first value of i in your for loop is 0, so rr gets the square root of the dot product of the first entry in r with itself (which is 0), and the division by rr in the subsequent line throws the error.
share
...