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Pick a random element from an array
...low
Just to answer your question, you can do this to achieve random array selection:
let array = ["Frodo", "sam", "wise", "gamgee"]
let randomIndex = Int(arc4random_uniform(UInt32(array.count)))
print(array[randomIndex])
The castings are ugly, but I believe they're required unless someone else h...
how to install gcc on windows 7 machine?
...ain Cygwin page. What is tricky about the installer is making sure you are selecting the right packages. From the instructions, which has this to say about gcc: "By default, setup.exe will install only the packages in the Base category and their dependencies, resulting in a minimal Cygwin installati...
Why does the expression 0 < 0 == 0 return False in Python?
...uccess')[result_code == 0], before this I had never seen a boolean used to select an item in a list/tuple.
– Andrew Clark
May 20 '11 at 16:24
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Do checkbox inputs only post data if they're checked?
...
Workaround: use <select>with two options on and off :-)
– andy
May 23 '18 at 9:26
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Learning to write a compiler [closed]
... (scanning and parsing, semantic analysis, activation records, instruction selection, RISC and x86 native code generation) and various "advanced" topics (compiling OO and functional languages, polymorphism, garbage collection, optimization and single static assignment form) into relatively little sp...
Annotating text on individual facet in ggplot2
...t;% gather("Vars","Data_1"),
Data2 %>% gather("Vars","Data_2")
) %>% select(-Vars1) -> Data_combined
Data_combined %>%
group_by(Vars) %>%
summarise(r=cor(Data_1,Data_2),
r2=r^2,
p=(pt(abs(r),nrow(.)-2)-pt(-abs(r),nrow(.)-2))) %>%
mutate(rlabel=paste(...
How to install Java SDK on CentOS?
...
An alternative answer is,
sudo yum list \*java-1\* | grep open
than select one from list and install that
for example,
sudo yum install java-1.7.0-openjdk.x86_64
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Why is Swift compile time so slow?
...ule optimization' in the 'Swift Compiler - Code Generation' build setting. Select 'Fast, Whole Module Optimization'
In 'Swift Compiler - Custom Flags', for your development builds, add '-Onone'
When these flags are set, the compiler will compile all Swift files in one step. We found with o...
How can I detect the touch event of an UIImageView?
...nd images for a control state, you'll want different images for Normal vs. Selected/Highlighted. The button style is what you set to UIButtonStyleCustom, I believe - again, look at the docs for the style property on UIButton.
– Kendall Helmstetter Gelner
May 1...
Android dex gives a BufferOverflowException when building
...pport Library and restarted Eclipse. You may have to play around with your selected API level.
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