大约有 30,000 项符合查询结果(耗时:0.0266秒) [XML]
What is the --save option for npm install?
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Looks like npm will not fire any error if you put a none exist option, like --save-xxxxxx. It just ignore it and the default behavior --save-prod will be in affect. Maybe --save comes from some old npm version.
– leon
M...
Average of 3 long integers
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answered May 30 '14 at 8:05
Patrick HofmanPatrick Hofman
140k1919 gold badges211211 silver badges281281 bronze badges
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Java: random long number in 0
...odify this to perform nextLong:
long nextLong(Random rng, long n) {
// error checking and 2^x checking removed for simplicity.
long bits, val;
do {
bits = (rng.nextLong() << 1) >>> 1;
val = bits % n;
} while (bits-val+(n-1) < 0L);
return val;
}
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Understanding implicit in Scala
...e 3 types of use of Implicit
Implicitly type conversion : It converts the error producing assignment into intended type
val x :String = "1"
val y:Int = x
String is not the sub type of Int , so error happens in line 2. To resolve the error the compiler will look for such a method in the scope wh...
psql: FATAL: database “” does not exist
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In my case i wrote $ createdb -h localhost to solve the error could not connect to database postgres: could not connect to server. After that i may connect to postgresql console via psql -h localhost.
– ExiRe
Jan 9 '14 at 14:23
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Django : How can I see a list of urlpatterns?
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All I get from that is TypeError: unsupported operand type(s) for +: 'NoneType' and 'str'
– Paul Tomblin
Dec 13 '13 at 20:04
6
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Pythonic way to print list items
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answered Jul 8 '15 at 15:05
ytpillaiytpillai
3,0962323 silver badges4141 bronze badges
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How to install gem from GitHub source?
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ERROR: While executing gem ... (NoMethodError) undefined method 'build' for Gem::Package:Module Sounds very cool but I won't be looking into it further. Just wanted to post that it didn't work for me in case someone else...
Finding the average of a list
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And it produces a nicer error if you accidentally pass in an empty list statistics.StatisticsError: mean requires at least one data point instead of a more cryptic ZeroDivisionError: division by zero for the sum(x) / len(x) solution.
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What does “abstract over” mean?
... The code runs on REPL fine. What version of Scala are you using, and what error did you get?
– Daniel C. Sobral
Jan 22 '11 at 22:47
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