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How to check if std::map contains a key without doing insert?
...u take the 'premature optimization' rhetoric too far. You should take any "free" optimization habits you can find and use them for everyday development. It's when coders succumb to the trap of paying costs in readability/dev time/etc, all for unmeasured "performance gains" that the premature optimiz...
“static const” vs “#define” vs “enum”
...els is illegal in all versions of C language. (Of course, your compiler is free to support it as a non-standard C++-like language extension.)
– AnT
Feb 10 '12 at 23:46
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Are Swift variables atomic?
...nously. This closure will be passed in the current value
/// and it is free to modify it. Any modifications will be saved back to the original value.
/// No other reads/writes will be allowed between when the closure is called and it returns.
public func mutate(_ closure: (inout Value) -...
Set time part of DateTime in ruby
... answer to calculate midnight x days in the future.
For example, a 14 day free trial that should expire at midnight on the 14th day:
DateTime.now.midnight + 14.days
is the morning of the 14th day, which equates to a 13.x day trial (x is the part of the day left over - if now is noon, then it's 1...
Limitations of Intel Assembly Syntax Compared to AT&T [closed]
...x is more common.
Personally, I hate AT&T syntax. There are plenty of free assemblers (NASM, YASM) along with GAS that support Intel syntax too, so there won't be any problems doing Intel syntax in Linux.
Beyond that, it's just a syntactic difference. The result of both will be the same x86 ma...
How can you dynamically create variables via a while loop? [duplicate]
...e bytecode can reference them directly as offsets in the stack frame (plus free variables which are also included when you call locals(). The exception is in Python 2.x when you use exec inside a function without specifying a local namespace for the exec. I'm not sure offhand where this is documente...
Express-js wildcard routing to cover everything under and including a path
....get('/hello/world(/*)?' /* ... */)
Here is a fully working example, feel free to copy and paste this into a .js file to run with node, and play with it in a browser (or curl):
const app = require('express')()
// will be able to match all of the following
const test1 = 'http://localhost:3000/hello...
How are people managing authentication in Go? [closed]
... used together or without the other two and nicely integrates with context free middleware.
wraphttpauth provides integration of go-http-auth with go-on/wrap.
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How to view the Folder and Files in GAC?
... the drive in Windows 7.
Type SUBST Z: C:\Windows\assembly
Z can be any free drive letter.
Open My Computer and look in the new substitute directory.
To remove the virtual drive from Command Prompt, type SUBST Z: /D
As for why you'd want to do something like this, I've used this trick to compa...
Does Python have “private” variables in classes?
...uired in python?"
For the same reason, it's not required in Java.
You're free to use -- or not use private and protected.
As a Python and Java programmer, I've found that private and protected are very, very important design concepts. But as a practical matter, in tens of thousands of lines of J...