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How to set delay in android?
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Tuan VuTuan Vu
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How can I add items to an empty set in python
...; type(d)
<type 'set'>
>>> d.update({1})
>>> d.add(2)
>>> d.update([3,3,3])
>>> d
set([1, 2, 3])
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Install dependencies globally and locally using package.json
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218
New Note: You probably don't want or need to do this. What you probably want to do is just pu...
“for” vs “each” in Ruby
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This is the only difference:
each:
irb> [1,2,3].each { |x| }
=> [1, 2, 3]
irb> x
NameError: undefined local variable or method `x' for main:Object
from (irb):2
from :0
for:
irb> for x in [1,2,3]; end
=> [1, 2, 3]
irb> x
=> 3
With t...
Programmatically change input type of the EditText from PASSWORD to NORMAL & vice versa
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22 Answers
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how does array[100] = {0} set the entire array to 0?
... not magic.
The behavior of this code in C is described in section 6.7.8.21 of the C specification (online draft of C spec): for the elements that don't have a specified value, the compiler initializes pointers to NULL and arithmetic types to zero (and recursively applies this to aggregates).
Th...
When should I choose Vector in Scala?
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281
As a general rule, default to using Vector. It’s faster than List for almost everything and...
Why does SIGPIPE exist?
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112
I don't buy the previously-accepted answer. SIGPIPE is generated exactly when the write fails wi...
How do I fetch lines before/after the grep result in bash?
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275
You can use the -B and -A to print lines before and after the match.
grep -i -B 10 'error' da...
A semantics for Bash scripts?
...lear that the execution model of a shell is pretty much:
1. Expand words.
2. Assume the first word is a command.
3. Execute that command with the following words as arguments.
Expansion, command resolution, execution. All of the shell's semantics are bound up in one of these three things, althoug...