大约有 7,000 项符合查询结果（耗时：0.0208秒） [XML]
Why should C++ programmers minimize use of 'new'?
... std::string* mString;
};
Line::Line() {
mString = new std::string("foo_bar");
}
Line::~Line() {
delete mString;
}
Is actually a lot more risky to use than the following one:
class Line {
public:
Line();
std::string mString;
};
Line::Line() {
mString = "foo_bar";
// not...
foreach vs someList.ForEach(){}
...ious engineers went out of their way to use list.ForEach( delegate(item) { foo;}); instead of foreach(item in list) {foo; }; for all the code that they wrote. e.g. a block of code for reading rows from a dataReader.
I still don't know exactly why they did this.
The drawbacks of list.ForEach() are:...
How to get string objects instead of Unicode from JSON?
...m inside a big nest of lists']]]]]]]]
>>> json_loads_byteified('{"foo": "bar", "things": [7, {"qux": "baz", "moo": {"cow": ["milk"]}}]}')
{'things': [7, {'qux': 'baz', 'moo': {'cow': ['milk']}}], 'foo': 'bar'}
>>> json_load_byteified(open('somefile.json'))
{'more json': 'from a fil...
Learning Python from Ruby; Differences and Similarities
...of attribute: one that is executable.
So for example:
>>> class foo:
... x = 5
... def y(): pass
...
>>> f = foo()
>>> type(f.x)
<type 'int'>
>>> type(f.y)
<type 'instancemethod'>
That difference has a lot of implications, like for example...
What is the most appropriate way to store user settings in Android application
...FS_FILE_NAME, Context.MODE_PRIVATE) );
// eg.
prefs.edit().putString("foo","bar").commit();
prefs.getString("foo", null);
Here's the code for the class:
/**
* Warning, this gives a false sense of security. If an attacker has enough access to
* acquire your password store, then he almost c...
C++ project organisation (with gtest, cmake and doxygen)
...der files in an additional project-named subdirectory: "/prj/include/prj/foo.hpp", which seems redundant to me. Why not just "/prj/include/foo.hpp"? I am assuming that you will have an opportunity to re-jig the installation directories at installation-time, so you get <INSTALL_DIR>/include/p...
What is the difference between a URI, a URL and a URN?
...
file:///home/user/file.txt
tel:1-888-555-5555
http://example.com/resource?foo=bar#fragment
/other/link.html (A relative URL, only useful in the context of another URL)
URLs always start with a protocol (http) and usually contain information such as the network host name (example.com) and often a ...
HEAD and ORIG_HEAD in Git
...th modifiers like @{u} applied to it), but also affects e.g. "refs/heads/@/foo", which it shouldn't.
The basic idea of giving a short-hand might be good, and the topic can be retried later, but let's revert to avoid affecting existing use cases for now for the upcoming release.
...
How does this giant regex work?
...+vNwhg/vTo9eBDE+eU7XCftj79oN8fU3Zzpwb/DpxJn0fPhY2eKoh0HoOv1xWS/CiVjJwccKh8EfD2iO4nAWRMtorsqMbK3dZkPHj9ykFvJn7DoDNyxT7o1Grc6e1J+woyBmB8F8OrAlZfLHvfFi7dPd//wN/t+J3Cjygmk3ip0wLmOeHTcMg7AburMgjL3pqFynr97U60ZuXLZ5sh+M7OrRh7dvzUT43CWAyK6m8k2cm6574/bnMZYXexNXgkAyvXd9b+LF5eTjxBl5/e4f8yB2o244nyKQSB64Q2/qlm1o...
Does C++ support 'finally' blocks? (And what's this 'RAII' I keep hearing about?)
...elease();
}
};
// A class which uses 'mutex' and 'lock' objects
class foo
{
mutex mutex_; // mutex for locking 'foo' object
public:
void bar()
{
lock scopeLock(mutex_); // lock object.
foobar(); // an operation which may throw an exception
// scopeLock will...