大约有 45,000 项符合查询结果（耗时：0.0445秒） [XML]
Convert tuple to list and back
...IDTH] # print value at (x,y)
And you could be even faster if you used a bitfield instead of a list:
WIDTH = 8 # better align your width to bytes, eases things later
level1 = 0xFC84848484FC # bit field representation of the level
print "1" if level1 & mask(x, y) else "0" # print bit at (x,...
Interface defining a constructor signature?
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DanDan
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“Incorrect string value” when trying to insert UTF-8 into MySQL via JDBC?
...n UTF-8. Here you have a character that needs 4 bytes: \xF0\x90\x8D\x83 (U+10343 GOTHIC LETTER SAUIL).
If you have MySQL 5.5 or later you can change the column encoding from utf8 to utf8mb4. This encoding allows storage of characters that occupy 4 bytes in UTF-8.
You may also have to set the serve...
Split string with multiple delimiters in Python [duplicate]
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Just to add to this a little bit, instead of adding a bunch of or "|" symbols you can do the following: re.split('[;,.\-\%]',str), where inside of [ ] you put all the characters you want to split by.
– jmracek
Nov 6...
Increment a database field by 1
...gins)+1? Essentially you'd run a query much like the following - perhaps a bit more complex depending on your specific needs:
INSERT into mytable (logins)
SELECT max(logins) + 1
FROM mytable
share
|
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What is the best practice for dealing with passwords in git repositories?
...print(os.environ['your_env_variable'])
PS: be aware that it's probably a bit risky (but it's a quite common practice) https://www.bleepingcomputer.com/news/security/javascript-packages-caught-stealing-environment-variables/
PS2: this dev.to article titled "How to securely store API keys" may be i...
How to strip all non-alphabetic characters from string in SQL Server?
... function:
Create Function [dbo].[RemoveNonAlphaCharacters](@Temp VarChar(1000))
Returns VarChar(1000)
AS
Begin
Declare @KeepValues as varchar(50)
Set @KeepValues = '%[^a-z]%'
While PatIndex(@KeepValues, @Temp) > 0
Set @Temp = Stuff(@Temp, PatIndex(@KeepValues, @Temp), 1, ''...
Export database schema into SQL file
...NAME
,@schema sysname
,@TableName SYSNAME
,@IncludeConstraints BIT = 1
,@IncludeIndexes BIT = 1
,@NewTableSchema sysname
,@NewTableName SYSNAME = NULL
,@UseSystemDataTypes BIT = 0
,@script varchar(max) output
AS
BEGIN try
if not exists (select * from sys.types wh...
How to get number of entries in a Lua table?
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return count
end
Also, notice that the "#" operator's definition is a bit more complicated than that. Let me illustrate that by taking this table:
t = {1,2,3}
t[5] = 1
t[9] = 1
According to the manual, any of 3, 5 and 9 are valid results for #t. The only sane way to use it is with arrays of ...
GCC dump preprocessor defines
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Late answer - I found the other answers useful - and wanted to add a bit extra.
How do I dump preprocessor macros coming from a particular header file?
echo "#include <sys/socket.h>" | gcc -E -dM -
or (thanks to @mymedia for the suggestion):
gcc -E -dM -include sys/socket.h - <...