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What is the difference between the states selected, checked and activated in Android?
...t does NOT propagate without help. These workarounds were of the following form: Extend the root layout to implement Checkable. In its constructor, recursively find all the children that implement Checkable. When setChecked() etc... are called, pass the call on to those Views. If those views impleme...
Stack smashing detected
...ned on for release builds as it is a security feature.
You can get some information about the point of overflow by running the program with a debugger. Valgrind doesn't work well with stack-related errors, but like a debugger, it may help you pin-point the location and reason for the crash.
...
How to change the CHARACTER SET (and COLLATION) throughout a database?
... `', TABLE_SCHEMA, '` CHARACTER SET utf8 COLLATE utf8_unicode_ci;')
from information_schema.tables
where TABLE_SCHEMA like 'database_name';
-- Change TABLE Collation / Char Set
SELECT concat('ALTER TABLE `', TABLE_SCHEMA, '`.`', table_name, '` CHARACTER SET utf8 COLLATE utf8_unicode_ci;')
from i...
What's the difference between UTF-8 and UTF-8 without BOM?
... encountered in contexts where UTF-8 data is converted from other encoding forms that use a BOM or where the BOM is used as a UTF-8 signature. See the “Byte Order Mark” subsection in Section 16.8, Specials, for more information.
...
What does an exclamation mark mean in the Swift language?
... wrapped with an if statement, and because Apple pay close attention to performance in runtime, they want to give you a way to make your app run with the best possible performance.
Update:
Getting back to this answer after 4 years, as I got the highest reputations from it in Stackoverflow :)
I mis...
Is XSLT worth it? [closed]
...rs could write their content (educational course material) in a simplified format which would then be transformed into HTML via XSLT. I played around (struggled) with it for a while and got it to a very basic level but then was too annoyed by the limitations I was encountering (which may well have b...
How to detect if a script is being sourced
...:file$ ]] && sourced=1 || sourced=0
$ZSH_EVAL_CONTEXT contains information about the evaluation context - call this outside of a function. Inside a sourced script['s top-level scope], $ZSH_EVAL_CONTEXT ends with :file.
Caveat: Inside a command substitution, zsh appends :cmdsubst, so test ...
Determining complexity for recursive functions (Big O notation)
... to find T(n-1) as follow: T(n-1) = T(n-1-1) + 1. It looks like we can now form a function that can give us some sort of repetition so we can fully understand. We will place the right side of T(n-1) = ... instead of T(n-1) inside the method T(n) = ... which will give us: T(n) = T(n-1-1) + 1 + 1 whic...
What's the $unwind operator in MongoDB?
...ts, joins, etc. from your mind. The way that it stores your data is in the form of documents and collections, which allows for a dynamic means of adding and obtaining the data from your storage locations.
That being said, in order to understand the concept behind the $unwind parameter, you first mu...
How come a non-const reference cannot bind to a temporary object?
...signment to 'x'.
Note that getx() does not return a reference but a fully formed object into the local context. The object is temporary but it is not const, thus allowing you to call other methods to compute a value or have other side effects happen.
// It would allow things like this.
getPipeline...