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Android equivalent to NSNotificationCenter
...ess of porting an iPhone application over to android, I am looking for the best way to communicate within the app. Intents seem to be the way to go, is this the best (only) option? NSUserDefaults seems much lighter weight than Intents do in both performance and coding.
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C++ STL Vectors: Get iterator from index?
...e it somewhere, or you should ensure in your program to never push any new item in vec, or requesting to change its capacity. Or risk segmentation fault...
Therefore in your exemple it leads to
vector.insert(pos, &vec[first_index], &vec[last_index]);
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How to generate a random int in C?
...er reason is that the properties of rand() and functions like it are known best for the use case where they are seeded exactly once per run, and not on every single call. Depending on "randomness" with untested or unproven properties leads to trouble.
– RBerteig
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How does Google's Page Speed lossless image compression work?
...nefit from
// different parameters and this combination of 4 seems to work best for a large
// set of PNGs from the web.
const PngCompressParams kPngCompressionParams[] = {
PngCompressParams(PNG_ALL_FILTERS, Z_DEFAULT_STRATEGY),
PngCompressParams(PNG_ALL_FILTERS, Z_FILTERED),
PngCompressParams...
Why do table names in SQL Server start with “dbo”?
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As a best practice, I always add the "dbo." prefix even though it is not necessary. Most of the time in SQL it's good to be explicit.
– SurroundedByFish
Jun 30 '09 at 13:56
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Pry: show me the stack
...ally look for my project name to filter out all the irrelevant rails stack items. For example, if my project name were archie I'd use:
caller.select {|line| line.include? "archie" }
Which gives me the stack trace I'm looking for.
A shorter way would be:
caller.select {|x| x["archie"] }
Which ...
Changing the color of the axis, ticks and labels for a plot in matplotlib
...ntaining the word 'color'
[(param, value) for param, value in plt.rcParams.items() if 'color' in param]
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Why would you use Oracle database? [closed]
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i disagree! Oracle is definitely one of the best implementations of RDBMS. It manages memory very efficiently and can handle complex JOIN operations which easilly cripple MySQL and MsSQL. Oracle has a great Architecture, it makes it rock solid because it is very easy t...
how to emulate “insert ignore” and “on duplicate key update” (sql merge) with postgresql?
...'re dealing with large amounts of rows for example from a subquery, you're best of splitting it into two queries, one for INSERT and one for UPDATE (as an appropriate join/subselect of course - no need to write your main filter twice)
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How to open a file using the open with statement
...you use the return to specify the value to return.)
Using multiple open() items with with was not supported in Python 2.5 when the with statement was introduced, or in Python 2.6, but it is supported in Python 2.7 and Python 3.1 or newer.
http://docs.python.org/reference/compound_stmts.html#the-wi...