大约有 2,070 项符合查询结果（耗时：0.0147秒） [XML]
Regex: Specify “space or start of string” and “space or end of string”
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For Python it helps to specify it a raw string, e.g. mystr = r'\bstack overflow\b'
– Acumenus
Mar 26 '19 at 15:33
add a comment
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Calling class staticmethod within the class body?
...icmethod objects apparently have a __func__ attribute storing the original raw function (makes sense that they had to). So this will work:
class Klass(object):
@staticmethod # use as decorator
def stat_func():
return 42
_ANS = stat_func.__func__() # call the staticmethod
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How to drop into REPL (Read, Eval, Print, Loop) from Python code
... to instrument):
x = 0 # exit loop counter
while x == 0:
user_input = raw_input("Please enter a command, or press q to quit: ")
if user_input[0] == "q":
x = 1
else:
try:
print eval(user_input)
except:
print "I can't do that, Dave."
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Remove unwanted parts from strings in a column
... @LucaGuarro from the python docs: "The r prefix, making the literal a raw string literal, is needed in this example because escape sequences in a normal “cooked” string literal that are not recognized by Python, as opposed to regular expressions, now result in a DeprecationWarning and will ...
How to find gaps in sequential numbering in mysql?
...ue at RIGHT or LEFT then we know there is no adjacent value.
The complete raw output of my table is:
select * from arrc_vouchers order by id asc;
0
2
3
4
5
6
7
8
9
22
23
24
29
33
Some notes:
The SQL IF statement in the join condition is needed if you define the 'id' fie...
How to import CSV file data into a PostgreSQL table?
...re's some code that shows you how to set various options:
# Set it so the raw sql output is logged
import logging
logging.basicConfig()
logging.getLogger('sqlalchemy.engine').setLevel(logging.INFO)
df.to_sql("my_table_name2",
engine,
if_exists="append", #options are ‘fail...
Add a duration to a moment (moment.js)
...y methods, such as .format() or .toDate() or .unix(). Just looking at the raw moment isn't going to work well. You might also want to do something like yourmoment.utc().format() to format it as utc instead of local time.
– Matt Johnson-Pint
Jun 27 '13 at 4:31...
How to convert SecureString to System.String?
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If you want to avoid creating a managed string object, you can access the raw data using Marshal.ReadInt16(IntPtr, Int32):
void HandleSecureString(SecureString value) {
IntPtr valuePtr = IntPtr.Zero;
try {
valuePtr = Marshal.SecureStringToGlobalAllocUnicode(value);
for (int i=0; i <...
How do you copy the contents of an array to a std::vector in C++ without looping?
...C-style arrays are perfectly valid containers for most STL algorithms--the raw pointer is equivalent to begin(), and (ptr + n) is equivalent to end().
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Do I have to guard against SQL injection if I used a dropdown?
...mysqli. Mostly by accident, I presume, but anyway, I have to warn you that raw mysqli is not an adequate substitution for the old mysq_* functions. Simply because if used in the old style, it will add no security at all. While it's support for the prepared statements is painful and troublesome, to t...