大约有 15,577 项符合查询结果（耗时：0.0236秒） [XML]
How to get whole and decimal part of a number?
...d($my_var, 1)
will return the same result, but sometime with a small round error.
How do I tell CPAN to install all dependencies?
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If you get an error Can't locate object method "install" via package "xxx" at -e line 1. add a "+" right before the module name.
– Yann Sagon
Mar 28 '14 at 16:12
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Extracting specific columns in numpy array
...fic columns and store them in another numpy array but I get invalid syntax errors.
Here is the code:
9 Answers
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Assign variable value inside if-statement [duplicate]
...nside if.
I wouldn't recommend it. The problem is, it looks like a common error where you try to compare values, but use a single = instead of == or ===.
It will be better if you do something like this:
int v;
if((v = someMethod()) != 0)
return true;
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Overwriting my local branch with remote branch [duplicate]
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@greggles: Any errors? After the last command, HEAD must point at origin/branch.
– knittl
Oct 18 '12 at 18:10
1
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How to show the loading indicator in the top status bar
...eProcessQueue completionHandler:^(NSURLResponse *response, NSData *data, NSError *error)
{
[[RMActivityIndicator sharedManager]decreaseActivity];
}
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Lists: Count vs Count() [duplicate]
...rable<TSource> source)
{
if (source == null)
{
throw Error.ArgumentNull("source");
}
ICollection<TSource> is2 = source as ICollection<TSource>;
if (is2 != null)
{
return is2.Count;
}
int num = 0;
using (IEnumerator<TSource> ...
Rails: select unique values from a column
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This throws an error with Rails 5.1 / AR 5.1 => undefined method `uniq'
– Graham Slick
Aug 11 '17 at 12:06
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send mail from linux terminal in one line [closed]
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In case you are using gmail and still you are getting some authentication error then you need to change setting of gmail:
Turn on Access for less secure apps from here
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How to reverse a 'rails generate'
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rails destroy controller Controller_name was returning a bunch of errors. To be able to destroy controller I had to remove related routes in routes.rb. P.S. I'm using rails 3.1
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