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How to add 10 days to current time in Rails
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days, years, etc., are part of Active Support, So this won't work in irb, but it should work in rails console.
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Copy array by value
...to note that it will work as expected for primitive types (string, number, etc.), and to also explain the expected behavior for reference types...
If you have an array of Reference types, say of type Object. The array will be copied, but both of the arrays will contain references to the same Objec...
VIM + JSLint?
...e) using your favorite package manager (Ubuntu's apt-get, Mac's home brew, etc.).
Community-driven jshint.com (better than JSLint)
Install node.js using your favorite package manager.
Install Node Package Manager: 'curl https://npmjs.org/install.sh | sh' EDIT: npm IS PART OF node.js NOW
See htt...
What's a good way to extend Error in JavaScript?
.../* ... */} doesn't correctly handle vendor-specific arguments (lineNumber, etc), 'Extending Error in Javascript with ES6 syntax' is Babel specific, your ES5 solution uses const and it doesn't handle custom arguments.
– Indolering
Sep 19 '17 at 13:46
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jsonify a SQLAlchemy result set in Flask [duplicate]
...on mixin which I use with my models. The serialization function basically fetches whatever attributes the SQLAlchemy inspector exposes and puts it in a dict.
from sqlalchemy.inspection import inspect
class Serializer(object):
def serialize(self):
return {c: getattr(self, c) for c in i...
Hidden features of Scala
...endsWith("=")) {
p = ps.findCash(code.substring(0, 3)) //e.g. USD=, GBP= etc
}
else if (code.endsWith(".FWD")) {
//e.g. GBP20090625.FWD
p = ps.findForward(code.substring(0,3), code.substring(3, 9))
}
else {
p = ps.lookupProductByRic(code)
}
With this, which is much clearer in my opinion
i...
vs2008编译boost详细步骤 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...Boost on Win32
Default; /usr/local on Unix. Linux, etc.
--exec-prefix=<EPREFIX> Install architecture dependent files here.
Default; <PREFIX>
--libdir=<DIR> Install library files here.
Default; <EPREFIX>/l...
Mysql - How to quit/exit from stored procedure
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As of MySQL v5.5 you can throw an exception. Negating exception handlers, etc. that will achieve the same result, but in a cleaner, more poignant manner.
Here's how:
DECLARE CUSTOM_EXCEPTION CONDITION FOR SQLSTATE '45000';
IF <Some Error Condition> THEN
SIGNAL CUSTOM_EXC...
When should I use the HashSet type?
...d some items, the set won't remember which one was first, and which second etc.
Constants in Objective-C
...nst MyFirstConstant;
FOUNDATION_EXPORT NSString *const MySecondConstant;
//etc.
(you can use extern instead of FOUNDATION_EXPORT if your code will not be used in mixed C/C++ environments or on other platforms)
You can include this file in each file that uses the constants or in the pre-compiled h...