大约有 46,000 项符合查询结果（耗时：0.0532秒） [XML]
Where to store global constants in an iOS application?
...m is using the constant. I wanted to create another constant with static NSString* const fullUrl = [NSString stringWithFormat:@"%@%@", kbaseUrl, @"script.php"], but apparently it's illegal to create consts with an expression. I get the error "initializer element is not constant".
...
Python: using a recursive algorithm as a generator
...
def getPermutations(string, prefix=""):
if len(string) == 1:
yield prefix + string
else:
for i in xrange(len(string)):
for perm in getPermutations(string[:i] + string[i+1:], prefix+string[i]):
...
Value of type 'T' cannot be converted to
...ven though it's inside of an if block, the compiler doesn't know that T is string.
Therefore, it doesn't let you cast. (For the same reason that you cannot cast DateTime to string)
You need to cast to object, (which any T can cast to), and from there to string (since object can be cast to string).
...
How to select the last record of a table in SQL?
...
to get the last row of a SQL-Database use this sql string:
SELECT * FROM TableName WHERE id=(SELECT max(id) FROM TableName);
Output:
Last Line of your db!
share
|
improv...
Unable to access JSON property with “-” dash
I am unable to retrieve a value from a json object when the string has a dash character:
3 Answers
...
MVC3 DropDownListFor - a simple example?
...d to map the value that is selected on this drop-down back into the simple string property on my view model?
4 Answers
...
Converting String To Float in C#
I am converting a string like "41.00027357629127", and I am using;
7 Answers
7
...
How to set the id attribute of a HTML element dynamically with angularjs (1.x)?
...f its id attribute, which is the concatenation of a scope variable and a string ?
7 Answers
...
Why is using a wild card with a Java import statement bad?
...nt class in the same package, you have to go fix the imports. While these extra steps can be automated, they are really productivity hits for no real gain.
Even if Eclipse didn't do class imports by default, everyone would still be doing star imports. I'm sorry, but there's really no rational jus...
Why were pandas merges in python faster than data.table merges in R in 2012?
... may have discovered a known issue in data.table when the number of unique strings (levels) is large: 10,000.
Does Rprof() reveal most of the time spent in the call sortedmatch(levels(i[[lc]]), levels(x[[rc]])? This isn't really the join itself (the algorithm), but a preliminary step.
Recent effo...