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Best practice for instantiating a new Android Fragment
...y overloaded constructor that you write will be ignored, as Android can't know which one to use.
In the lifetime of an Activity the fragment gets created as above and destroyed multiple times by Android. This means that if you put data in the fragment object itself, it will be lost once the fragme...
Shards and replicas in Elasticsearch
...tand it. If I download Elasticsearch and run the script, then from what I know I have started a cluster with a single node. Now this node (my PC) have 5 shards (?) and some replicas (?).
...
Warning: The Copy Bundle Resources build phase contains this target's Info.plist file
...
I see now that NOT unchecking "add to targets" when copying the plist file in to my project was the reason I got this problem. To fix the problem, I followed the steps in the "correct answer" above though deleting and re-adding wit...
How to remove all callbacks from a Handler?
...sed by sub-classes to postDelay some Runnables, and I can't manage them. Now, in the onStop event, I need to remove them before finishing the Activity (somehow I called finish() , but it still call again and again). Is there anyway to remove all callbacks from a Handler?
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UPDATE multiple tables in MySQL using LEFT JOIN
... same can be applied to a scenario where the data has been normalized, but now you want a table to have values found in a third table. The following will allow you to update a table with information from a third table that is liked by a second table.
UPDATE t1
LEFT JOIN
t2
ON
t2.some_id = t1.s...
What's the difference between git reflog and log?
...ith some of your commit code) and delete the branches rm .git/refs/heads/*
Now git log --oneline will show only HEAD and its commits ancestors.
git reflog on the other hand is using direct log that is created inside .git/logs
Experiment: rm -rf .git/logs and git reflog is empty.
Anyway, even if you ...
Display open transactions in MySQL
...ut down and restarted between the first and second statements without you knowing it:
Also see: http://dev.mysql.com/doc/refman/5.0/en/auto-reconnect.html
How to diagnose and fix this
To check for auto-reconnection:
If an automatic reconnection does occur (for example, as a result of calli...
Can't escape the backslash with regex?
...eta characters. Take for example, finding a backslash followed by a digit. Now you'd be staring at the following expression trying to figure out what's going on: new RegExp('\\\\\\d');.
– jabacchetta
May 27 '18 at 18:04
...
Import PEM into Java Key Store
...,
starting with ---BEGIN.. and ending with ---END.. lines. Lets assume we now have three files: cert1.pem, cert2.pem, and pkey.pem.
Convert pkey.pem into DER format using openssl and the following syntax:
openssl pkcs8 -topk8 -nocrypt -in pkey.pem -inform PEM -out pkey.der -outform DER
Note,...
Which are more performant, CTE or temporary tables?
...bles are automatically dropped (usually at the end of a session). I don't know about other DBMS though.
– Serrano
Feb 11 '13 at 12:50
2
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