大约有 16,000 项符合查询结果（耗时：0.0220秒） [XML]
Correct format specifier to print pointer or address?
... p The argument shall be a pointer to void. The value of the pointer is
converted to a sequence of printing characters, in an implementation-defined
manner.
(In C11 — ISO/IEC 9899:2011 — the information is in §7.21.6.1 ¶8.)
On some platforms, that will include a leading 0x and on other...
How do you properly determine the current script directory in Python?
...
#!/usr/bin/env python
import inspect
import os
import sys
def get_script_dir(follow_symlinks=True):
if getattr(sys, 'frozen', False): # py2exe, PyInstaller, cx_Freeze
path = os.path.abspath(sys.executable)
else:
path = inspect.getabsfile(get_script_dir)
...
How to detect the physical connected state of a network cable/connector?
...
You want to look at the nodes in
/sys/class/net/
I experimented with mine:
Wire Plugged in:
eth0/carrier:1
eth0/operstate:unknown
Wire Removed:
eth0/carrier:0
eth0/operstate:down
Wire Plugged in Again:
eth0/carrier:1
eth0/operstate:up
Side Tric...
Most efficient way to check for DBNull and then assign to a variable?
....NET alternative to Stevo3000's suggestion:
oSomeObject.IntMember = If(TryConvert(Of Integer)(oRow("Value")), iDefault)
oSomeObject.StringMember = If(TryCast(oRow("Name"), String), sDefault)
Function TryConvert(Of T As Structure)(ByVal obj As Object) As T?
If TypeOf obj Is T Then
Retur...
How do you iterate through every file/directory recursively in standard C++?
...e(hFind);
hFind = INVALID_HANDLE_VALUE;
}
return true;
}
int main(int argc, char* argv[])
{
vector<wstring> files;
if (ListFiles(L"F:\\cvsrepos", L"*", files)) {
for (vector<wstring>::iterator it = files.begin();
it != files.end();
...
How do I convert from int to String?
...ou ask for concatenation; 3. as you do not have a string, you will finally convert your int into string. The solution of daridoo avoid the first steps.
– Nicolas
Nov 5 '10 at 14:24
...
How to join int[] to a character separated string in .NET?
...nting to do this in .NET 2.0 with C#2 can do this:
string.Join(",", Array.ConvertAll<int, String>(ints, Convert.ToString));
I find there are a number of other cases where the use of the Convert.xxx functions is a neater alternative to a lambda, although in C#3 the lambda might help the type...
Compare two DataFrames and output their differences side-by-side
...ny(df1.dtypes != df2.dtypes):
"Data Types are different, trying to convert"
df2 = df2.astype(df1.dtypes)
if df1.equals(df2):
return None
else:
# need to account for np.nan != np.nan returning True
diff_mask = (df1 != df2) & ~(df1.isnull() & df2...
Safest way to convert float to integer in python?
...s an integer out of the result of math.floor, and this answer shows how to convert a float into an integer. Take the float from math.floor and pipe it through int, problem solved: int(math.floor(2.3))
– JMTyler
Aug 19 '15 at 4:40
...
Convert pem key to ssh-rsa format
...
ssh-keygen -t rsa -b 2048 -f dummy-ssh-keygen.pem -N '' -C "Test Key"
Converting DER to PEM
If you have an RSA key pair in DER format, you may want to convert it to PEM to allow the format conversion below:
Generation:
openssl genpkey -algorithm RSA -out genpkey-dummy.cer -outform DER -pkeyo...