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Which @NotNull Java annotation should I use?
...ar
org.checkerframework.checker.nullness.qual from checker-framework-2.1.9.zip
lombok from lombok commit f6da35e4c4f3305ecd1b415e2ab1b9ef8a9120b4
javax.validation.constraints from validation-api-1.0.0.GA-sources.jar
share
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C++使用OLE/COM高速读写EXCEL的源码 - C/C++ - 清泛网 - 专注C/C++及内核技术
...el：
生成的结果Excel：
5、工程源码下载：ExcelDemo.zip
1233|1234|1455|2067C++ 高速读写 EXCEL OLE COM
What is the difference between URI, URL and URN? [duplicate]
... For example:
http://example.com/mypage.html
ftp://example.com/download.zip
mailto:user@example.com
file:///home/user/file.txt
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 u...
Use numpy array in shared memory for multiprocessing
...)
# create some random data and execute the child jobs
mem_ids, sumvals = zip(*launch_jobs(np.random.rand(10)))
# this will print 'True' on POSIX OS, since the data was shared
print(np.all(np.asarray(mem_ids) == id(data_array)))
...
Rename specific column(s) in pandas
.../a/38101084/452587
def method_5():
df_renamed = df.rename(columns=dict(zip(df[['A', 'M', 'N', 'Z']], ['A2', 'M2', 'N2', 'Z2'])))
print('Method 1:', timeit.timeit(method_1, number=10))
print('Method 2:', timeit.timeit(method_2, number=10))
print('Method 3:', timeit.timeit(method_3, number=10))
p...
Fitting empirical distribution to theoretical ones with Scipy (Python)?
...'loc', 'scale']
param_str = ', '.join(['{}={:0.2f}'.format(k,v) for k,v in zip(param_names, best_fit_params)])
dist_str = '{}({})'.format(best_fit_name, param_str)
ax.set_title(u'El Niño sea temp. with best fit distribution \n' + dist_str)
ax.set_xlabel(u'Temp. (°C)')
ax.set_ylabel('Frequency')
...
List all the modules that are part of a python package?
...his way you can treat all packages alike regardless if they are in eggs or zips or so (where os.listdir won't help).
import pkgutil
# this is the package we are inspecting -- for example 'email' from stdlib
import email
package = email
for importer, modname, ispkg in pkgutil.iter_modules(package....
What is the C runtime library?
...rest). That big file is typically something on the same general order as a zip file, but without any compression, so it's basically just some little files collected together and stored together into one bigger file. The archive will usually contain at least some indexing to make it relatively fast/e...
Python != operation vs “is not”
... if len(self) != len(other):
return False
for i, j in zip(self, other):
if i != j:
return False
return True
Note: __eq__ on unicode is definitely implemented more efficiently than this.
Rationale: Two objects have different data, but are c...
Is Java Regex Thread Safe?
...#A14 : "The Java 2 SDK, Standard Edition itself contains a file called src.zip that contains the source code for the public classes in the java package") so one can take a quick peek oneself.
– David Tonhofer
Nov 18 '13 at 15:40
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