大约有 21,000 项符合查询结果（耗时：0.0271秒） [XML]
Is it possible to print a variable's type in standard C++?
...tion
I am using __cxa_demangle for non-MSVC platforms as recommend by ipapadop in his answer to demangle types. But on MSVC I'm trusting typeid to demangle names (untested). And this core is wrapped around some simple testing that detects, restores and reports cv-qualifiers and references to the ...
Hosting a Maven repository on github
...y artifacts to a temporary staging location inside your target directory. Add this to your pom.xml:
<distributionManagement>
<repository>
<id>internal.repo</id>
<name>Temporary Staging Repository</name>
<url>file://${project.bui...
When do we have to use copy constructors?
...
fredoverflow
229k7979 gold badges347347 silver badges628628 bronze badges
answered Jul 19 '10 at 5:22
sharptoothsharptooth
...
Android Camera Preview Stretched
...
Anirudh Sharma
7,7501212 gold badges3636 silver badges4040 bronze badges
answered Oct 25 '13 at 14:25
F1sherF1sher
...
Using std Namespace
...
Most C++ users are quite happy reading std::string, std::vector, etc. In fact, seeing a raw vector makes me wonder if this is the std::vector or a different user-defined vector.
I am always against using using namespace std;. It imports all sorts of names i...
How to avoid reinstalling packages when building Docker image for Python projects?
...d a Dockerfile which looks something like this:
FROM my/base
WORKDIR /srv
ADD ./requirements.txt /srv/requirements.txt
RUN pip install -r requirements.txt
ADD . /srv
RUN python setup.py install
ENTRYPOINT ["run_server"]
Docker will use cache during pip install as long as you do not make any chang...
I need to securely store a username and password in Python, what are my options?
...use it once, and de-reference it immediately using the del statement.
The administrator still has to enter the password to start ssh-agent, at boot-time or whatever, but this is a reasonable compromise that avoids having a plain-text password stored anywhere on disk.
...
Catching an exception while using a Python 'with' statement
...ort with_statement
try:
with open( "a.txt" ) as f :
print f.readlines()
except EnvironmentError: # parent of IOError, OSError *and* WindowsError where available
print 'oops'
If you want different handling for errors from the open call vs the working code you could do:
try:
f ...
What part of Hindley-Milner do you not understand?
...that the environment Γ includes the fact that x has type σ.
⊢ can be read as proves or determines. Γ ⊢ x : σ means that the environment Γ determines that x has type σ.
, is a way of including specific additional assumptions into an environment Γ.
Therefore, Γ, x : τ ⊢ e : τ' means th...
Why should text files end with a newline?
I assume everyone here is familiar with the adage that all text files should end with a newline. I've known of this "rule" for years but I've always wondered — why?
...