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List comprehension with if statement
I want to compare 2 iterables and print the items which appear in both iterables.
4 Answers
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Redis cache vs using memory directly
I have not used Redis yet, but I heard about it and plan to try it as cache storing.
2 Answers
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What is the difference between Reader and InputStream?
What is the difference between Reader and InputStream?
And when to use what?
If I can use Reader for reading characters why I will use inputstream, I guess to read objects?
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Is there a way to use two CSS3 box shadows on one element?
... two shadows on it. The first shadow is an inner lighter box shadow (2px), and the second is a drop shadow outside the button (5px) itself.
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Check whether a string contains a substring
...cause a . can match any character. You can get around this by using the \Q and \E operators.
my $substring = "s1.domain.com";
if ($mystring =~ /\Q$substring\E/) {
print qq("$mystring" contains "$substring"\n);
}
Or, you can do as eugene y stated and use the index function.
Just a word of ...
How do I remove deleted branch names from autocomplete?
... git branch -d myBranch to delete a branch. However, when I am on master and try to checkout a new branch with git checkout , myBranch still appears in the tab-autocomplete.
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iphone ios running in separate thread
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In my opinion, the best way is with libdispatch, aka Grand Central Dispatch (GCD). It limits you to iOS 4 and greater, but it's just so simple and easy to use. The code to do some processing on a background thread and then do something with the results in the main run loop is inc...
Finding the PHP File (at run time) where a Class was Defined
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if you had an includes folder, you could run a shell script command to "grep" for "class $className" by doing: $filename = ``grep -r "class $className" $includesFolder/*\ and it would return which file it was in. Other than that, i don't think there is any magic function for PHP to do it ...
Is there a better way to write this null check, and a non-empty check, in groovy?
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@VinodJayachandran Yes
– dmahapatro
Dec 3 '15 at 12:41
2
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Rails: redirect_to with :error, but flash[:error] empty
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As stated in the Rails API only :notice and :alert are by default applied as a flash hash value. If you need to set the :error value, you can do it like this:
redirect_to show_path, flash: { error: "Insufficient rights!" }
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