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How can I read a text file in Android?
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If you have one empty row in your txt doc, this parser will stop working! The solution is to admit having this empty rows: while ((line = br.readLine()) != null) { if(line.length() > 0) { //do your stuff } ...
Ideal way to cancel an executing AsyncTask
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If you're doing computations:
You have to check isCancelled() periodically.
If you're doing a HTTP request:
Save the instance of your HttpGet or HttpPost somewhere (eg. a public field).
After calling cancel, call reques...
Golang production web application configuration
...han HAProxy and capable of doing more).
HAProxy is very easy to configure if you read its documentation (HTML version). My whole haproxy.cfg file for one of my Go projects follows, in case you need a starting pont.
global
log 127.0.0.1 local0
maxconn 10000
user ...
Go to first line in a file in vim?
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In command mode (press Esc if you are not sure) you can use:
gg,
:1,
1G,
or 1gg.
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When increasing the size of VARCHAR column on a large table could there be any problems?
...rom (200 to 1200) on a table with about 500k rows. What I need to know is if there are any issues I have not considered.
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How do I tar a directory of files and folders without including the directory itself?
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@Ivan if you replace . with * so the command will be cd my_directory/ && tar -zcvf ../my_dir.tgz * && cd .. then it will work as you expected.
– Anonymous
Mar 3 '15 at 2:47
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How to generate an openSSL key using a passphrase from the command line?
First - what happens if I don't give a passphrase? Is some sort of pseudo random phrase used? I'm just looking for something "good enough" to keep casual hackers at bay.
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Logical Operators, || or OR?
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There is no "better" but the more common one is ||. They have different precedence and || would work like one would expect normally.
See also: Logical operators (the following example is taken from there):
// The result of the expression (false || true) is assigned to $e
// Acts like: ...
View inside ScrollView doesn't take all place
...nt when using a ScrollView. After all, the ScrollView would become useless if its content was always as tall as itself. To work around this, you need to use the ScrollView attribute called android:fillViewport. When set to true, this attribute causes the scroll view’s child to expand to the height...
Entity Framework - Start Over - Undo/Rollback All Migrations
...ny migration by using:
Update-Database -TargetMigration:"MigrationName"
If you want to rollback all migrations you can use:
Update-Database -TargetMigration:0
or equivalent:
Update-Database -TargetMigration:$InitialDatabase
In some cases you can also delete database and all migration class...