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What is a 'semantic predicate' in ANTLR?
...er: it parses an input string consisting of at least
// one number, optionally followed by zero or more comma's and numbers
parse
: number (',' number)* EOF
;
// matches a number that is between 1 and 3 digits long
number
: Digit Digit Digit
| Digit Digit
| Digit
;
// matches a si...
How to Compare Flags in C#?
...ed answer:
public Boolean HasFlag(Enum flag) {
if (!this.GetType().IsEquivalentTo(flag.GetType())) {
throw new ArgumentException(
Environment.GetResourceString(
"Argument_EnumTypeDoesNotMatch",
flag.GetType(),
this.GetType())...
Recursion in Angular directives
...are a couple of popular recursive angular directive Q&A's out there, which all come down to one of the following solutions:
...
How to launch an Activity from another Application in Android
...GORY_LAUNCHER. Returns null if neither are found."
– quietmint
Jun 2 '15 at 17:05
...
Apple Pay入华遇阻 只因BAT太受欢迎？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...易规模的提升确实十分明显，在去年第四季度，微信和手Q带来的订单量就占到了京东的20%。不过能得到微信入口的企业并不多，就连滴滴和点评也被隐藏在了三级入口里，其他商户更是很难享受微信的入口红利。不过基于社交...
How to subtract X days from a date using Java calendar?
...ng it doesn't matter if it's DAY_OF_MONTH or DAY_OF_YEAR stackoverflow.com/q/14065198/32453
– rogerdpack
Oct 3 '14 at 22:07
...
Mock vs MagicMock
My understanding is that MagicMock is a superset of Mock that automatically does "magic methods" thus seamlessly providing support for lists, iterations and so on... Then what is the reason for plain Mock existing? Isn't that just a stripped down version of MagicMock that can be practically ...
What exactly does += do in python?
...
+1 for answering the question, but -1 for an __iadd__ that returns a different type (which itself is addable)
– Caleth
Jun 1 '18 at 16:07
...
Pad a number with leading zeros in JavaScript [duplicate]
...ly works with 4 digits). Of course, it is a specific answer to a specific question, but including a length option would be better (like other answers).
– doubleJ
Nov 4 '13 at 19:26
...
Using IPython notebooks under version control
...
Here is my solution with git. It allows you to just add and commit (and diff) as usual: those operations will not alter your working tree, and at the same time (re)running a notebook will not alter your git history.
Although this can probably be adapted to ...