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Should I use string.isEmpty() or “”.equals(string)?
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251
The main benefit of "".equals(s) is you don't need the null check (equals will check its argum...
Do interfaces inherit from Object class in java
...ace).
This is explained in detail in the Java Language Specification, § 9.2 Interface Members.
9.2 Interface Members
[...]
If an interface has no direct superinterfaces, then the interface implicitly declares a public abstract member method m with signature s, return type r, and throws clause t c...
How to update bower.json with installed packages?
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answered Jan 27 '14 at 22:50
Helder RobaloHelder Robalo
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Regex not operator
Is there an NOT operator in Regexes?
Like in that string : "(2001) (asdf) (dasd1123_asd 21.01.2011 zqge)(dzqge) name (20019)"
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Delete a project from SonarQube
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102
You have 2 ways to delete a project:
If you are an admin of the project, you can delete it from...
Has reCaptcha been cracked / hacked / OCR'd / defeated / broken? [closed]
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92
+50
I notice ...
SQL Server NOLOCK and joins
... this exercise. Begin a transaction and insert a row into table1 and table2. Don't commit or rollback the transaction yet. At this point your first query will return successfully and include the uncommitted rows; your second query won't return because table2 doesn't have the WITH(NOLOCK) hint on...
How can I get Docker Linux container information from within the container itself?
...aware of their configuration, the same way you can get information about EC2 instances through metadata.
14 Answers
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Hashing a string with Sha256
I try to hash a string using SHA256, I'm using the following code:
7 Answers
7
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Find the number of columns in a table
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205
SELECT COUNT(*)
FROM INFORMATION_SCHEMA.COLUMNS
WHERE table_catalog = 'database_name' -- th...