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Vagrant error : Failed to mount folders in Linux guest
...ted out, update the VBoxGuestAdditions.iso file on your mac:
wget https://www.virtualbox.org/download/testcase/VBoxGuestAdditions_4.3.11-93070.iso
sudo cp VBoxGuestAdditions_4.3.11-93070.iso /Applications/VirtualBox.app/Contents/MacOS/VBoxGuestAdditions.iso
UPDATE (16may2014)
Since the is...
How to add an auto-incrementing primary key to an existing table, in PostgreSQL?
... difference between GENERATED BY DEFAULT and GENERATED ALWAYS, see https://www.cybertec-postgresql.com/en/sequences-gains-and-pitfalls/.
For altering the sequence, see https://popsql.io/learn-sql/postgresql/how-to-alter-sequence-in-postgresql/.
...
Will Dart support the use of existing JavaScript libraries?
... use existing JavaScript code with your Dart app. Learn more here: https://www.dartlang.org/articles/js-dart-interop/
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Exclude a sub-directory using find
...s a valuable example of 15 find examples that exclude directories:
http://www.theunixschool.com/2012/07/find-command-15-examples-to-exclude.html
To link to the initial question, excluding finally worked for me like this:
find . -regex-type posix-extended -regex ".*def/incoming.*|.*456/incoming.*...
Creating PHP class instance with a string
...
have a look at example 3 from http://www.php.net/manual/en/language.oop5.basic.php
$className = 'Foo';
$instance = new $className(); // Foo()
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Passing a Bundle on startActivity()?
...xtra("string_name"));
This works for me, you can try it.
Source:https://www.c-sharpcorner.com/article/how-to-send-the-data-one-activity-to-another-activity-in-android-application/
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How to dump a dict to a json file?
...rint json file.
The tricks print >> f, j is found from here:
http://www.anthonydebarros.com/2012/03/11/generate-json-from-sql-using-python/
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Postgresql - change the size of a varchar column to lower length
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In PostgreSQL 9.1 there is an easier way
http://www.postgresql.org/message-id/162867790801110710g3c686010qcdd852e721e7a559@mail.gmail.com
CREATE TABLE foog(a varchar(10));
ALTER TABLE foog ALTER COLUMN a TYPE varchar(30);
postgres=# \d foog
Table "public.foog"
Column...
XML Validation with XSD in Visual Studio IDE
...t;
In the XSD file's schema element:
<xs:schema
xmlns:xs="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://yourdomain.com/yourschema.xsd"
xmlns:this="http://yourdomain.com/yourschema.xsd"
elementFormDefault="qualified">
...
</xs:schema>
A note on using T...
Is JSON Hijacking still an issue in modern browsers?
.... Here's a little test page, based on the main attacks described in http://www.thespanner.co.uk/2011/05/30/json-hijacking/:
(http://jsfiddle.net/ph3Uv/2/)
var capture = function() {
var ta = document.querySelector('textarea')
ta.innerHTML = '';
ta.appendChild(document.createTextNode("...