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Why do I get AttributeError: 'NoneType' object has no attribute 'something'?
...ealize something() might return None when it doesn't succeed or the result set was empty or whatever.
– tripleee
Feb 4 '19 at 8:02
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How to print out the contents of a vector?
...r> // for ostream_iterator
#include <vector>
int main() {
/* Set up vector to hold chars a-z */
std::vector<char> path;
for (int ch = 'a'; ch <= 'z'; ++ch)
path.push_back(ch);
/* Print path vector to console */
std::copy(path.begin(), path.end(), std::...
How to reverse a singly linked list using only two pointers?
...The only bug, though, is the last line in the reverse() function should be setting first, I believe. Otherwise, the original code worked OK when plugged into your neat test harness. You get +1 from me even so - but an explanation of what you consider the 'obvious errors' would improve your answer....
C++, variable declaration in 'if' expression
... && (Test a = Test(5)))) {
// now what do we do?! what is "a" set to?
Seems like the limitation you have found seems perfectly reasonable - it prevents these kinds of ambiguities from happening.
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How to bind inverse boolean properties in WPF?
...at has an IsReadOnly property. If this property is true, I would like to set the IsEnabled property on a Button, ( for example ), to false.
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Sort hash by key, return hash in Ruby
... This is correct. I would suggest using the RBtree gem to gain ordered set functionality in ruby.
– Aaron Scruggs
Dec 2 '10 at 20:46
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Calling clojure from java
...ojure.var("clojure.core", "require");
require.invoke(Clojure.read("clojure.set"));
IFns can be passed to higher order functions, e.g. the example below passes plus to read:
IFn map = Clojure.var("clojure.core", "map");
IFn inc = Clojure.var("clojure.core", "inc");
map.invoke(inc, Clojure.read("[1...
Dependent DLL is not getting copied to the build output folder in Visual Studio
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Yes, you'll need to set Copy Local to true. However, I'm pretty sure you'll also need to reference that assembly from the main project and set Copy Local to true as well - it doesn't just get copied from a dependent assembly.
You can get to the...
Sort JavaScript object by key
..., currentIndex and array
.reduce((accumulator, currentValue) => {
// setting the accumulator (sorted new object) with the actual property from old (unsorted) object.
accumulator[currentValue] = testObj[currentValue];
// returning the newly sorted object for the next element in array.
re...
Test if remote TCP port is open from a shell script
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on Mac at least, you may need to add -G# to set a connection timeout separate from/in addition to the -w# timeout, which basically functions as a read timeout.
– Doktor J
Aug 30 '17 at 18:46
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