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How to check whether a string contains a substring in Ruby
I have a string variable with content:
9 Answers
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What's the difference between HEAD, working tree and index, in Git?
...n someone tell me the difference between HEAD, working tree and index, in Git?
5 Answers
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user authentication libraries for node.js?
...tion for a user (using a custom backend auth DB), and associate that user with a session.
15 Answers
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Set a default font for whole iOS app?
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It seems to be possible in iOS 5 using the UIAppearance proxy.
[[UILabel appearance] setFont:[UIFont fontWithName:@"YourFontName" size:17.0]];
That will set the font to be whatever your custom font is for all UILabels in ...
What's a reliable way to make an iOS app crash?
...t to test my app's crash reporting out in the field by deliberately having it crash when the user performs a particular action that a real user is unlikely to do accidentally.
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Computed / calculated / virtual / derived columns in PostgreSQL
...computed columns" of SQL Server.
STORED generated columns are introduced with Postgres 12. Trivial example:
CREATE TABLE tbl (
int1 int
, int2 int
, product bigint GENERATED ALWAYS AS (int1 * int2) STORED
);
db<>fiddle here
VIRTUAL generated columns may come with one of the next i...
Text overflow ellipsis on two lines
I know you can use a combination of CSS rules to make text end with ellipsis (...) when it's time to overflow (get out of parent's bounds).
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Checking if a blob exists in Azure Storage
...got a very simple question (I hope!) - I just want to find out if a blob (with a name I've defined) exists in a particular container. I'll be downloading it if it does exist, and if it doesn't then I'll do something else.
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Cropping an UIImage
...ve mentioned, this method doesn't take rotation into account; read some additional answers and spread some upvote love around to keep the responses to this question helpful for everyone.
Original response:
I'm going to copy/paste my response to the same question elsewhere:
There isn't a simple cl...
CSS background image alt attribute
... have not had to tackle before. I need to use alt tags on all images in a site including those used by CSS background-image attribute.
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