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Changing every value in a hash in Ruby
...
If you want the actual strings themselves to mutate in place (possibly and desirably affecting other references to the same string objects):
# Two ways to achieve the same result (any Ruby version)
my_hash.each{ |_,str| str....
Using HeapDumpOnOutOfMemoryError parameter for heap dump for JBoss
...e this data gets dumped? Is it just to the console, or to some log file? If it's just to the console, what if I'm not logged into the Unix server through the console?
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How do I fix certificate errors when running wget on an HTTPS URL in Cygwin?
... solution after all.
First, you need to install the cygwin package ca-certificates via Cygwin's setup.exe to get the certificates.
Do NOT use curl or similar hacks to download certificates (as a neighboring answer advices) because that's fundamentally insecure and may compromise the system.
Seco...
Difference Between Invoke and DynamicInvoke
What is the difference between Invoke and DynamicInvoke in delegates? Please give me some code example which explain difference between that two methods.
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Is JavaScript an untyped language?
...typed" to mean "no static types"...
So the problem is that there's a few different definitions of untyped.
One definition has been talked about in one of the above answers - the runtime doesn't tag values and just treats each value as bits. JavaScript does tag values and has different behaviour bas...
Start an Activity with a parameter
...y:
Bundle b = getIntent().getExtras();
int value = -1; // or other values
if(b != null)
value = b.getInt("key");
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C# switch statement limitations - why?
...use it is wrong:
The switch statement is not the same
thing as a big if-else statement.
Each case must be unique and evaluated
statically. The switch statement does
a constant time branch regardless of
how many cases you have. The if-else
statement evaluates each condition
until...
Emulate ggplot2 default color palette
...this function:
ggplotColours <- function(n = 6, h = c(0, 360) + 15){
if ((diff(h) %% 360) < 1) h[2] <- h[2] - 360/n
hcl(h = (seq(h[1], h[2], length = n)), c = 100, l = 65)
}
Demonstrating this in barplot:
y <- 1:3
barplot(y, col = ggplotColours(n = 3))
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Re-ordering columns in pandas dataframe based on column name [duplicate]
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This assumes that sorting the column names will give the order you want. If your column names won't sort lexicographically (e.g., if you want column Q10.3 to appear after Q9.1), you'll need to sort differently, but that has nothing to do with pandas.
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What is “Argument-Dependent Lookup” (aka ADL, or “Koenig Lookup”)?
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Koenig Lookup, or Argument Dependent Lookup, describes how unqualified names are looked up by the compiler in C++.
The C++11 standard § 3.4.2/1 states:
When the postfix-expression in a function call (5.2.2) is an unqualified-id, other namespaces not considered during the usual unqual...