大约有 45,000 项符合查询结果（耗时：0.0509秒） [XML]
Sort points in clockwise order?
...ious oversight that it was missing. The if statements could be reorganized now because some checks are redundant. For example, if the first condition in the first if statement is false, then the first condition of the second if must be true. I decided, however, to leave the code as it is for the sak...
Hidden Features of JavaScript? [closed]
... pop(), push(), slice() and so forth. (You can convert it to a real array if you want: "var argArray = Array.prototype.slice.call(arguments);" )
– Jacob Mattison
Jan 26 '09 at 21:37
...
CSV file written with Python has blank lines between each row
... 'wb' instead of 'w'. The csv.writer writes \r\n into the file directly. If you don't open the file in binary mode, it will write \r\r\n because on Windows text mode will translate each \n into \r\n.
In Python 3 the required syntax changed (see documentation links below), so open outfile with the...
Split code over multiple lines in an R script
...
You are not breaking code over multiple lines, but rather a single identifier. There is a difference.
For your issue, try
R> setwd(paste("~/a/very/long/path/here",
"/and/then/some/more",
"/and/then/some/more",
"/and/then/some/more", sep=""))
whi...
Why do we need C Unions?
... float to integer works? I don`t think so, as int and float are stored in different formats in memory. Can you explain your example?
– spin_eight
Oct 10 '12 at 10:51
3
...
Escape angle brackets in a Windows command prompt
...t the single escape with quotes:
cmd /c "echo ^<html^>"|findstr .
If you want to use the delayed expansion technique to avoid escapes, then there are even more surprises (You might not be surprised if you are an expert on the design of CMD.EXE, but there is no official MicroSoft documentati...
Entity Framework: There is already an open DataReader associated with this Command
...there is more then one command executed but you don't see it. I'm not sure if this can be traced in Profiler (exception can be thrown before second reader is executed). You can also try to cast the query to ObjectQuery and call ToTraceString to see the SQL command. It is hard to track. I always turn...
Regex replace uppercase with lowercase letters
...t (e.g. lOWERCASE => lOwercase)
Find: ([A-Z])(\w+)
Replace: $1\L$2
Shift-right-uppercase (e.g. Case => cAse => caSe => casE)
Find: ([a-z\s])([A-Z])(\w)
Replace: $1\l$2\u$3
Shift-left-uppercase (e.g. CasE => CaSe => CAse => Case)
Find: (\w)([A-Z])([a-z\s])
Replace: \u$1\l...
What is Data Transfer Object?
...DTOs can be to encapsulate parameters for method calls. This can be useful if a method takes more than 4 or 5 parameters.
When using the DTO pattern, you would also make use of DTO assemblers. The assemblers are used to create DTOs from Domain Objects, and vice versa.
The conversion from Domain Ob...
What is the difference between vmalloc and kmalloc?
...ical blocks of memory. However, it also seems as though kmalloc can fail if a contiguous physical block that you want can't be found.
What are the advantages of having a contiguous block of memory? Specifically, why would I need to have a contiguous physical block of memory in a system call...