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How can I search for a multiline pattern in a file?
...,/End pattern/ {printf NR " "; print}' filename. You can make it prettier by giving the line numbers a fixed width: awk '/Start pattern/,/End pattern/ {printf "%-4s ", NR; print}' filename.
– Robert
Jan 6 '15 at 13:12
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How to update a value, given a key in a hashmap?
...ou can update with your requirement. Here I am updating to increment value by 1.
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Remove whitespaces inside a string in javascript
..."hello world".replace(/\s/g, "");
for all white space use the suggestion by Rocket in the comments below!
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How to detect if a function is called as constructor?
... x as a function, unless you assign a property to every new object created by x as it is constructed:
function x(y) {
var isConstructor = false;
if (this instanceof x // <- You could use arguments.callee instead of x here,
// except in in EcmaScript 5 strict mod...
ruby inheritance vs mixins
In Ruby, since you can include multiple mixins but only extend one class, it seems like mixins would be preferred over inheritance.
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Best implementation for hashCode method for a collection
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For every field f tested in the equals() method, calculate a hash code c by:
If the field f is a boolean:
calculate (f ? 0 : 1);
If the field f is a byte, char, short or int: calculate (int)f;
If the field f is a long: calculate (int)(f ^ (f >>> 32));
If the field f is a float: calcula...
How to get the function name from within that function?
...slightly better choice than hardcoding the string.
– byxor
Dec 4 '19 at 11:49
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catch all unhandled exceptions in ASP.NET Web Api
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Certain 500 errors still don't get caught by this, eg. HttpException - the remote host closed the connection. Is there still a place for global.asax Application_Error to handle errors outside web api processing?
– Avner
Jun 3 '...
What is the difference between a directory and a folder?
... the term "Folder" as part of its "desktop metaphor", this was popularized by the 1980's Mac, and became universal in later GUIs including Windows. But at the command line, it's still a "directory".
– Orion Lawlor
Aug 28 at 7:28
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How do I rename all folders and files to lowercase on Linux?
... case insensitive filesystem. In my case I replaced the then-enclosed line by (mv "${SRC}" "${DST}.renametmp" && mv "${DST}.renametmp" "${DST}") || echo "${SRC} was not renamed".
– Lloeki
Apr 20 '11 at 16:21
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