大约有 30,000 项符合查询结果（耗时：0.0674秒） [XML]
Git says “Warning: Permanently added to the list of known hosts”
...is added to the known_hosts file. This fixes the issue, rather than just hiding the log message.
This problem was bugging me for quite some time. The problem occurs because the OpenSSH client compiled for Windows doesn't check the known_hosts file in ~/.ssh/known_hosts
ssh -vvvvvvvvvvvvvvvvvvv g...
Precedence and bitmask operations
...
Well, consider a more common example: the ternary operator, PHP has it backwards, making it different than all other languages. Ref: phpsadness
– Alvin Wong
Feb 24 '14 at 10:38
...
How is a CRC32 checksum calculated?
...k of the CRC-32 as a series of "Binary Arithmetic with No Carries", or basically "XOR and shift operations". This is technically called Polynomial Arithmetic.
CRC primer, Chapter 5
To better understand it, think of this multiplication:
(x^3 + x^2 + x^0)(x^3 + x^1 + x^0)
= (x^6 + x^4 + x^3
+ x^...
Android SQLite: nullColumnHack parameter in insert/replace methods
The Android SDK has some convenience methods for manipulating data with SQLite. However both the insert and replace methods use some nullColumnHack parameter which usage I don't understand.
...
pyplot scatter plot marker size
...
This can be a somewhat confusing way of defining the size but you are basically specifying the area of the marker. This means, to double the width (or height) of the marker you need to increase s by a factor of 4. [because A = WH => (2W)(2H)=4A]
There is a reason, however, that the size of mar...
Which is faster/best? SELECT * or SELECT column1, colum2, column3, etc
...g SQL commands because it is more efficient to SELECT columns you specifically need.
47 Answers
...
What is the maximum length of a valid email address?
What is the maximum length of a valid email address? Is it defined by any standard?
6 Answers
...
regex to match a single character that is anything but a space
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled...
How to increase font size in a plot in R?
...
Did you read help(par) about ps? Does not seem text-related as far as I can tell.
– Dirk Eddelbuettel
Nov 22 '10 at 2:51
...
Inline code highlighting in reStructuredText
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled...