大约有 43,100 项符合查询结果（耗时：0.0385秒） [XML]
Bundler: Command not found
I am hosting on a vps, ubuntu 10.04, rails 3, ruby and mysql installed correctly by following some tutorials. If I run bundle check or bundle install I get the error '-bash: bundle: command not found'. From gem list --local I see 'bundler (1.0.2, 1.0.0)' is installed.
...
Compare two DataFrames and output their differences side-by-side
...
14 Answers
14
Active
...
Why is 1/1/1970 the “epoch time”?
...
Early versions of unix measured system time in 1/60 s intervals. This meant that a 32-bit unsigned integer could only represent a span of time less than 829 days. For this reason, the time represented by the number 0 (called the epoch) had to be set in the very recent pas...
How to use a decimal range() step value?
Is there a way to step between 0 and 1 by 0.1?
33 Answers
33
...
What is the formal difference in Scala between braces and parentheses, and when should they be used?
... if, and only if, the method expects a single parameter. For example:
List(1, 2, 3).reduceLeft{_ + _} // valid, single Function2[Int,Int] parameter
List{1, 2, 3}.reduceLeft(_ + _) // invalid, A* vararg parameter
However, there’s more you need to know to better grasp these rules.
Increased compil...
Django 1.7 throws django.core.exceptions.AppRegistryNotReady: Models aren't loaded yet
...
12 Answers
12
Active
...
Efficient SQL test query or validation query that will work across all (or most) databases
...
13 Answers
13
Active
...
Waiting until two async blocks are executed before starting another block
...
10 Answers
10
Active
...
pandas: filter rows of DataFrame with operator chaining
...
14 Answers
14
Active
...
How does the C code that prints from 1 to 1000 without loops or conditional statements work?
I've found C code that prints from 1 to 1000 without loops or conditionals :
But I don't understand how it works. Can anyone go through the code and explain each line?
...