大约有 16,000 项符合查询结果（耗时：0.0271秒） [XML]
NullPointerException in Java with no StackTrace
I've had instances of our Java code catch a NullPointerException , but when I try to log the StackTrace (which basically ends up calling Throwable.printStackTrace() ), all I get is:
...
Return string without trailing slash
...
ChanduChandu
72.1k1616 gold badges118118 silver badges122122 bronze badges
...
How do you do natural logs (e.g. “ln()”) with numpy in Python?
...
np.log is ln, whereas np.log10 is your standard base 10 log.
Relevant documentation:
http://docs.scipy.org/doc/numpy/reference/generated/numpy.log.html
http://docs.scipy.org/doc/numpy/reference/generated/numpy.log10.html
...
How do I include a path to libraries in g++
I am trying to include the path to extra libraries in my makefile, but I can't figure out how to get the compiler to use that path. so far I have:
...
Multiple Type Constraints in Swift
...which lets you specify as many requirements as you want (all of which must be fulfilled) separated by commas
Swift 2:
func someFunc<T where T:SomeProtocol, T:SomeOtherProtocol>(arg: T) {
// stuff
}
Swift 3 & 4:
func someFunc<T: SomeProtocol & SomeOtherProtocol>(arg: T) {...
Adding HTML entities using CSS content
...
You have to use the escaped unicode :
Like
.breadcrumbs a:before {
content: '\0000a0';
}
More info on : http://www.evotech.net/blog/2007/04/named-html-entities-in-numeric-order/
share
...
How to specify new GCC path for CMake
My OS is centos which has a default gcc in path /usr/bin/gcc . But it is old, I need a new version of gcc. So I install a new version in a new path /usr/local/bin/gcc .
...
How to grep and replace
I need to recursively search for a specified string within all files and subdirectories within a directory and replace this string with another string.
...
How to update npm
I'm trying to install mean.io boilerplate. It fails when running sudo npm install -g meanio@latest . Prior to failing it notes that it 'wants' npm version 1.4.x, whereas I have 1.2.18 installed. So I tried updating npm to the latest; several ways. Last of which was...
...
live output from subprocess command
... a hydrodynamics code. When it comes time to run the simulation, I use subprocess.Popen to run the code, collect the output from stdout and stderr into a subprocess.PIPE --- then I can print (and save to a log-file) the output information, and check for any errors. The problem is, I have no id...