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Check if UIColor is dark or bright?

...of the colour components, including the alpha. The docs don't specify what order they're in but I assume it would be red, green, blue, alpha. Also, from the docs, "the size of the array is one more than the number of components of the color space for the color." - it doesn't say why... ...
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How to get different colored lines for different plots in a single figure?

... don't force a different color for each plot, all the plots share the same order of colors but, if we stretch a bit what "automatically" means, it can be done. The OP wrote [...] I have to identify each plot with a different color which should be automatically generated by [Matplotlib]. But...
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How to start an Intent by passing some parameters to it?

... In order to pass the parameters you create new intent and put a parameter map: Intent myIntent = new Intent(this, NewActivityClassName.class); myIntent.putExtra("firstKeyName","FirstKeyValue"); myIntent.putExtra("secondKeyName"...
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String.format() to format double in java

... Yes, Matt is right. %1, %2 and so on can be used to re-order the output based on the index of your input arguments. See this. You can omit the index and the default order will be assumed by the formatter. – praneetloke May 14 '16 at 16:06 ...
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Python setup.py develop vs install

...development. I ended up using pip install -e PATH (within a virtualenv) in order to avoid problems that cropped up via easy_install. – Joe D'Andrea Jan 13 '16 at 16:24 ...
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Why would introducing useless MOV instructions speed up a tight loop in x86_64 assembly?

...instructions that are more RISC in behavior. Additionally there are out-of-order execution analyzers, branch predictors, Intel's "micro-ops fusion" that try to group instructions into larger batches of simultaneous work (kind of like the VLIW/Itanium titanic). There are even cache boundaries that co...
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What is Ad Hoc Query?

...ot be determined prior to the moment the query is issued. It is created in order to get information when need arises and it consists of dynamically constructed SQL which is usually constructed by desktop-resident query tools. Check: http://www.learn.geekinterview.com/data-warehouse/dw-basics/what-i...
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Troubleshooting “Illegal mix of collations” error in mysql

...ery. Here is an example that uses the COLLATE clause: SELECT * FROM table ORDER BY key COLLATE latin1_general_ci; Another option is to use the BINARY operator: BINARY str is the shorthand for CAST(str AS BINARY). Your solution might look something like this: SELECT * FROM table WHERE BINAR...
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Checking for an empty field with MySQL

...er late to this discussion, but the statement will work if you reverse the order: "AND ((email IS NOT NULL) AND (email != '')). If evaluated in the other order, the statement evaluates as null (not TRUE) if the email address is NULL, and thus will not be either TRUE or FALSE. So the IS NULL check...
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Undefined reference to `pow' and `floor'

...u can now see, functions pow, floor are linked to GLIBC_2.2.5. Parameters order is important too, unless your system is configured to use shared librares by default, my system is not, so when I issue: $ gcc -lm fib.o fib.o: In function `fibo': fib.c:(.text+0x57): undefined reference to `pow' fib.c...