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Checking whether a variable is an integer or not [duplicate]
... before I give data to a database query when wanting to fetch an objetc by id, which is an integer, I check if input is actually and integer and useable before handing it to the database layer.
– Henning
Jun 15 '13 at 9:49
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What is the relationship between Looper, Handler and MessageQueue in Android?
I have checked the official Android documentation/guide for Looper , Handler and MessageQueue . But I couldn't get it. I am new to android, and got very confused with these concepts.
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RabbitMQ and relationship between channel and connection
...age broker, whereas a Channel is a virtual connection (AMQP connection) inside it. This way you can use as many (virtual) connections as you want inside your application without overloading the broker with TCP connections.
You can use one Channel for everything. However, if you have multiple threads...
What is a stream?
...input stream itself, and it does something extra that the original stream didn't.
Stream is a useful abstraction because it can describe files (which are really arrays, hence seek is straightforward) but also terminal input/output (which is not seekable unless buffered), sockets, serial ports, etc....
How to iterate over arguments in a Bash script
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Incidentally, one of the other merits of "$@" is that it expands to nothing when there are no positional parameters whereas "$*" expands to the empty string -- and yes, there is a difference between no arguments and one empty ar...
How to use glOrtho() in OpenGL?
...code every time the window is resized:
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0.0f, windowWidth, windowHeight, 0.0f, 0.0f, 1.0f);
This will remap the OpenGL coordinates into the equivalent pixel values (X going from 0 to windowWidth and Y going from 0 to windowHeight). Note that I...
How to update Python?
.... 2.7.4),
different major version of official Python (e.g. 3.3), install side-by-side with old, set paths/associations to point to dominant (e.g. 2.7), shortcut to other (e.g. in BASH $ ln /c/Python33/python.exe python3).
The answer depends:
If OP has 2.7.x and wants to install newer version of...
ab load testing
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The apache benchmark tool is very basic, and while it will give you a solid idea of some performance, it is a bad idea to only depend on it if you plan to have your site exposed to serious stress in production.
Having said that, here's the most common and simplest parameters:
-c: ("Concurrency")...
What's the difference between the atomic and nonatomic attributes?
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The last two are identical; "atomic" is the default behavior (note that it is not actually a keyword; it is specified only by the absence of nonatomic -- atomic was added as a keyword in recent versions of llvm/clang).
Assuming that you are ...
How do I increase the capacity of the Eclipse output console?
...limit is now 2147383647, about 2GB, as of Oxygen.1a Release (4.7.1a) Build id: 20171005-1200.
– tyblu
Oct 15 '17 at 20:31
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