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How to properly reuse connection to Mongodb across NodeJs application and modules
I've been reading and reading and still am confused on what is the best way to share the same database (MongoDb) connection across whole NodeJs app. As I understand connection should be open when app starts and reused between modules. My current idea of the best way is that server.js (main file wh...
How to convert array to SimpleXML
How can I convert an array to a SimpleXML object in PHP?
33 Answers
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Create singleton using GCD's dispatch_once in Objective-C
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This is a perfectly acceptable and thread-safe way to create an instance of your class. It may not technically be a "singleton" (in that there can only ever be 1 of these objects), but as long as you only use the [Foo sharedFoo] method to access the object, this is good enough.
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embedding image in html email
I'm trying to send a multipart/related html email with embedded gif images. This email is generated using Oracle PL/SQL. My attempts have failed, with the image showing up as a red X (in Outlook 2007 and yahoo mail)
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How to check if a column exists in a SQL Server table?
I need to add a specific column if it does not exist. I have something like the following, but it always returns false:
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How to use ArrayAdapter
I have created row.xml in layouts, but don't know how to show both reason and long_val in the ListView using ArrayAdapter.
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SQLite table constraint - unique on multiple columns
I can find syntax "charts" on this on the SQLite website, but no examples and my code is crashing. I have other tables with unique constraints on a single column, but I want to add a constraint to the table on two columns. This is what I have that is causing an SQLiteException with the message "syn...
Add new methods to a resource controller in Laravel
...want to know if it is possible to add new methods to a resource controller in Laravel and how you do it.
9 Answers
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INSERT INTO … SELECT FROM … ON DUPLICATE KEY UPDATE
I'm doing an insert query where most of many columns would need to be updated to the new values if a unique key already existed. It goes something like this:
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Is there a way of having git show lines added, lines changed and lines removed?
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You can use:
git diff --numstat
to get numerical diff information.
As far as separating modification from an add and remove pair, --word-diff might help. You could try something like this:
MOD_PATTERN='^.+(\[-|\{\+).*$' \
ADD_PATTERN='^\{\+.*\+\}$' \
REM_PATTERN='^\[-.*-\]$' \...