大约有 47,000 项符合查询结果（耗时：0.0700秒） [XML]
Check if the number is integer
...
does the tolerance-checking suggestion really work?? x <- 5-1e-8; x%%1 gives 0.9999999 (which would imply if tol==1e-5 for example) that x is not an integer.
– Ben Bolker
Jan 24 '14 at 15:34
...
Getting the filenames of all files in a folder [duplicate]
I need to create a list with all names of the files in a folder.
3 Answers
3
...
How to .gitignore all files/folder in a folder, but not the folder itself? [duplicate]
... something in it, even just an empty file.
For example, add an empty file called .gitkeep to the folder you want to keep, then in your .gitignore file write:
# exclude everything
somefolder/*
# exception to the rule
!somefolder/.gitkeep
Commit your .gitignore and .gitkeep files and this should re...
Android Studio Collapse definitions and methods
How can I collapse all definitions and methods within the Android Studio editor?
14 Answers
...
Does JavaScript guarantee object property order?
...insertion)
As a note, properties order in objects weren’t guaranteed at all before ES2015. Definition of an Object from ECMAScript Third Edition (pdf):
4.3.3 Object
An object is a member of the
type Object. It is an unordered collection of properties each of which
contains a primitive value, obj...
What do the makefile symbols $@ and $< mean?
...e name of the target being generated, and $< the first prerequisite (usually a source file). You can find a list of all these special variables in the GNU Make manual.
For example, consider the following declaration:
all: library.cpp main.cpp
In this case:
$@ evaluates to all
$< evaluates to...
Select all child elements recursively in CSS
How can you select all child elements recursively?
2 Answers
2
...
What does “Memory allocated at compile time” really mean?
... languages like C and C++, people often refer to static and dynamic memory allocation. I understand the concept but the phrase "All memory was allocated (reserved) during compile time" always confuses me.
...
Socket.io rooms difference between broadcast.to and sockets.in
...
socket.broadcast.to broadcasts to all sockets in the given room, except to the socket on which it was called while io.sockets.in broadcasts to all sockets in the given room.
share
...
Find a string by searching all tables in SQL Server Management Studio 2008
Is there any way to search for a string in all tables of a database in SQL Server Management Studio 2008?
8 Answers
...