大约有 48,000 项符合查询结果（耗时：0.0569秒） [XML]
IntelliJ gives Fatal Error: Unable to find package java.lang in classpath or bootclasspath
...
This error happend to me after i've updated my JDK version to jdk1.8.0_161 -
But the project's sdk was still pointing to the old jdk 1.8.0_131
(Seems that updgrading java causing the previous version to be wiped).
Do this:
In the IntelliJ IDE go to File > Project Structure, from there:
...
How do you test functions and closures for equality?
...uence language design, so without a quick fix like the now deprecated @objc_block in matt's answer, I would argue that Swift can't properly store and retrieve closures at this time. So I don't think it's appropriate to advocate the use of Swift in callback heavy code like the kind encountered in we...
C/C++ check if one bit is set in, i.e. int variable
...if you want to hide bit manipulation, you can write a macro:
#define CHECK_BIT(var,pos) ((var) & (1<<(pos)))
and use it this way to check the nth bit from the right end:
CHECK_BIT(temp, n - 1)
In C++, you can use std::bitset.
...
How to determine if object is in array [duplicate]
...(In fact, using lodash, this whole solution becomes a one-liner, combining _.some and _.isEqual: _.some(list, v => _.isEqual(v, o)).)
– cdhowie
Dec 23 '19 at 18:34
...
Is it smart to replace boost::thread and boost::mutex with c++11 equivalents?
...not
C++11 supports std::async, but Boost does not
Boost has a boost::shared_mutex for multiple-reader/single-writer locking. The analogous std::shared_timed_mutex is available only since C++14 (N3891), while std::shared_mutex is available only since C++17 (N4508).
C++11 timeouts are different to Boo...
How would one write object-oriented code in C? [closed]
...
int (*close)(void *self);
int (*read)(void *self, void *buff, size_t max_sz, size_t *p_act_sz);
int (*write)(void *self, void *buff, size_t max_sz, size_t *p_act_sz);
// And data goes here.
} tCommClass;
tCommClass commRs232;
commRs232.open = &rs232Open;
: :
commRs232.write = &...
linq where list contains any in list
...
Sounds like you want:
var movies = _db.Movies.Where(p => p.Genres.Intersect(listOfGenres).Any());
share
|
improve this answer
|
fo...
How to atomically delete keys matching a pattern using Redis
In my Redis DB I have a number of prefix:<numeric_id> hashes.
23 Answers
23
...
Find unique rows in numpy.array
...f unique values in any N-dim array. To get unique rows, one can do:
unique_rows = np.unique(original_array, axis=0)
share
|
improve this answer
|
follow
|
...
Python concatenate text files
...path/to/output/file', 'w') as outfile:
for line in itertools.chain.from_iterable(itertools.imap(open, filnames)):
outfile.write(line)
Sadly, this last method leaves a few open file descriptors, which the GC should take care of anyway. I just thought it was interesting
...