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Does Javascript pass by reference? [duplicate]
...cript!
Call-by-Value
Primitive types are passed by-value:
var num = 123, str = "foo";
function f(num, str) {
num += 1;
str += "bar";
console.log("inside of f:", num, str);
}
f(num, str);
console.log("outside of f:", num, str);
Reassignments inside a function scope are ...
Difference between filter and filter_by in SQLAlchemy
...
Be careful when using .filter. a query like id=12345, query(users).filter(id == id) will not filter on users.id. Instead, it will evaluate id == id as True and return all users. You need to use .filter(users.id == id) (as demoed above). I made this mistake earlier today.
...
What is a method group in C#?
...) overload which takes a string parameter:
Func<string,string> fn = 123.ToString;
Console.WriteLine(fn("00000000"));
This example picks the ToString() overload which takes no parameters:
Func<string> fn = 123.ToString;
Console.WriteLine(fn());
...
How to measure time taken by a function to execute
...returns the number of microseconds in the fractional (e.g. a value of 1000.123 is 1 second and 123 microseconds).
now() is monotonically increasing. This is important as Date.getTime() can possibly jump forward or even backward on subsequent calls. Notably, if the OS's system time is updated (e.g....
How to validate an OAuth 2.0 access token for a resource server?
...
123
Google way
Google Oauth2 Token Validation
Request:
https://www.googleapis.com/oauth2/v1/tok...
What are the most-used vim commands/keypresses?
... blank line; } next blank line
By file:
gg start of file; G end of file
123G go to specific line number
By marker:
mx set mark x; 'x go to mark x
'. go to position of last edit
' ' go back to last point before jump
Scrolling:
^F forward full screen; ^B backward full screen
^D down half scre...
Should struct definitions go in .h or .c file?
...r version:
#include "api.h"
void good(struct s *foo)
{
api_func(foo, 123);
}
This one pokes around in the implementation details:
#include "api.h"
void bad(struct s *foo)
{
foo->internal = 123;
}
which will work with the "definition in header" version, but not with the "definition...
import module from string variable
...ike importlib.import_module("feature.email")
– Seanny123
Dec 6 '13 at 7:13
11
Finally, also remem...
Application auto build versioning
...ice that full package name is required. go build -ldflags "-X pkg.version=123" won't work while go build -ldflags "-X path/to/pkg.version=123" work as expected. hope it helps.
– csyangchen
Nov 25 '15 at 9:04
...
How can I capitalize the first letter of each word in a string?
...uld you make an addition to your answer that demonstrates this? E.g. lower 123 upper should return lower 123 Upper, where the upper is capitalized as it follows a number. I know it goes beyond the scope of the OP's question but a nice add-on to your already extensive answer. Thanks in advance.
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