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How to use WeakReference in Java and Android development?
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Using a WeakReference in Android isn't any different than using one in plain old Java. Here is a great guide which gives a detailed explanation: Understanding Weak References.
You should think about using one whenever you need a reference to an object, ...
How do I get logs/details of ansible-playbook module executions?
...RR:
Shared connection to 192.168.1.2 closed.
There are other modules besides the debug module if you want the output to be formatted differently. There's json, yaml, unixy, dense, minimal, etc. (full list).
For example, with stdout_callback = yaml, the output will look something like this:
TASK...
Do login forms need tokens against CSRF attacks?
... browser was logged in with the host account
As a pertinent example, consider YouTube. YouTube allowed users to see a record of "their own" viewing history, and their login form was CSRF-vulnerable! So as a result, an attacker could set up an account with a password they knew, log the victim into ...
What does “fragment” mean in ANTLR?
...ll never be counted as a token, it only serves to simplify a grammar.
Consider:
NUMBER: DIGITS | OCTAL_DIGITS | HEX_DIGITS;
fragment DIGITS: '1'..'9' '0'..'9'*;
fragment OCTAL_DIGITS: '0' '0'..'7'+;
fragment HEX_DIGITS: '0x' ('0'..'9' | 'a'..'f' | 'A'..'F')+;
In this example, matching a NUMBER w...
When to use actors instead of messaging solutions such as WebSphere MQ or Tibco Rendezvous?
...stems (MQ) are older in implementation but they are a newer in engineering idea of: transactional persistent queues. Scala Actors and Akka maybe a newer implementation but are built on an older concurrency model of Actors.
The two models however end up being very similar in practice because they bo...
Get an array of list element contents in jQuery
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Isn't $.each considered to have bad performance? If yes, is there any other way to do it?
– Daniel
Nov 1 '13 at 15:40
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Passing variables in remote ssh command
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didn't know that bash reacts differently with single quotes and double quotes. Thanks!
– silgon
Aug 29 '17 at 7:49
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Is cout synchronized/thread-safe?
... use of these objects and streams by
multiple threads if they wish to avoid interleaved characters. — end note ]
So, you won't get corrupted streams, but you still need to synchronize them manually if you don't want the output to be garbage.
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Why is Go so slow (compared to Java)?
...ptimisation). gccgo uses GCC's existing optimisation passes, and might provide a more pointful comparison with C, but gccgo isn't feature-complete yet.
Benchmark figures are almost entirely about quality of implementation. They don't have a huge amount to do with the language as such, except to the...
Should accessing SharedPreferences be done off the UI Thread?
...ugh...
once loaded, SharedPreferences are singletons and cached process-wide. so you want to get it loaded as early as possible so you have it in memory before you need it. (assuming it's small, as it should be if you're using SharedPreferences, a simple XML file...) You don't want to fault it ...