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Is it safe to delete a NULL pointer?
...ter delete. Setting a pointer to NULL after deleting it masquerades memory allocation errors, which is a very bad thing. A program that is correct does not delete a pointer twice, and a program that does delete a pointer twice should crash.
– Damon
Aug 30 '13 a...
How to Disable landscape mode in Android?
... reason, sensorPortrait may be better than portrait for Android 2.3+; this allows for upside-down portrait, which is quite common in tablet usage.
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How to export iTerm2 Profiles
... folder or URL:. There is a button next to it Save settings to Folder.
So all you need to do is save your settings first and load it after you reinstalled your OS.
If the Save settings to Folder is disabled, select a folder (e.g. empty) in the Load preferences from a custom folder or URL: text box...
Are class names in CSS selectors case sensitive?
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CSS selectors are generally case-insensitive; this includes class and ID selectors.
But HTML class names are case-sensitive (see the attribute definition), and that's causing a mismatch in your second example. This has not changed in HTML5.1
This...
Move assignment operator and `if (this != &rhs)`
In the assignment operator of a class, you usually need to check if the object being assigned is the invoking object so you don't screw things up:
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Font-awesome, input type 'submit'
... to use some class from font-awesome for button input? I've added icons to all buttons (which actually links with class 'btn' from twitter-bootstrap) in my applications, but can't add icons on 'input type submit'.
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Google Docs/Drive - number the headings
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If you want something more easy, there is a Google Add-On called "Table of Contents" that will allow you to number your headings.
To install this add-on:
Click on the Add-Ons > Get Add-Ons.
Click on the "Table of Contents" icon or search for this addon to install it
The...
How to execute raw SQL in Flask-SQLAlchemy app
...ion.execute('SELECT * FROM my_table WHERE my_column = :val', {'val': 5})
All your application queries should be going through a session object, whether they're raw SQL or not. This ensures that the queries are properly managed by a transaction, which allows multiple queries in the same request to ...
What is the C# equivalent of friend? [duplicate]
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Interesting note, in VB.NET Internal is still called Friend.
– Jeff
Oct 17 '13 at 19:55
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Access Enum value using EL with JSTL
I have an Enum called Status defined as such:
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