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Which is fastest? SELECT SQL_CALC_FOUND_ROWS FROM `table`, or SELECT COUNT(*)
When you limit the number of rows to be returned by a SQL query, usually used in paging, there are two methods to determine the total number of records:
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PHP: exceptions vs errors?
Maybe I'm missing it somewhere in the PHP manual, but what exactly is the difference between an error and an exception? The only difference that I can see is that errors and exceptions are handled differently. But what causes an exception and what causes an error?
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How to enable CORS in AngularJs
... a demo using JavaScript for Flickr photo search API.
Now I am converting it to the AngularJs.
I have searched on internet and found below configuration.
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How to run a class from Jar which is not the Main-Class in its Manifest file
I have a JAR with 4 classes, each one has Main method. I want to be able to run each one of those as per the need. I am trying to run it from command-line on Linux box.
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Upgrade Node.js to the latest version on Mac OS
...ently I am using Node.js v0.6.16 on Mac OS X 10.7.4. Now I want to upgrade it to the latest Node.js v0.8.1. But after downloading and installing the latest package file from nodejs.org, I found that system is still using v0.6.16 instead of v0.8.1 when I typed "node -v" in a terminal. Is there any st...
How to check BLAS/LAPACK linkage in NumPy and SciPy?
...n about linkage gathered at build time. My output looks like this. I think it means I am using the BLAS/LAPACK that ships with Mac OS.
>>> import numpy as np
>>> np.show_config()
lapack_opt_info:
extra_link_args = ['-Wl,-framework', '-Wl,Accelerate']
extra_compile_args =...
TypeError: ObjectId('') is not JSON serializable
...om MongoDB after querying an aggregated function on document using Python, It returns valid response and i can print it but can not return it.
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How to work with complex numbers in C?
How can I work with complex numbers in C? I see there is a complex.h header file, but it doesn't give me much information about how to use it. How to access real and imaginary parts in an efficient way? Is there native functions to get module and phase?
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in iPhone App How to detect the screen resolution of the device
...bounds];
That will give you the entire screen's resolution in points, so it would most typically be 320x480 for iPhones. Even though the iPhone4 has a much larger screen size iOS still gives back 320x480 instead of 640x960. This is mostly because of older applications breaking.
CGFloat screenScal...
Was PreferenceFragment intentionally excluded from the compatibility package?
I'm looking to write preferences that can be applied to both 3.0 and pre-3.0 devices. Discovering that PreferenceActivity contains deprecated methods (although these are used in the accompanying sample code), I looked at PreferenceFragement and the compatibility package to solve my woes.
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