大约有 40,000 项符合查询结果（耗时：0.0712秒） [XML]
PostgreSQL: Difference between text and varchar (character varying)
...S FOR 2016 (pg9.5+)
And using "pure SQL" benchmarks (without any external script)
use any string_generator with UTF8
main benchmarks:
2.1. INSERT
2.2. SELECT comparing and counting
CREATE FUNCTION string_generator(int DEFAULT 20,int DEFAULT 10) RETURNS text AS $f$
SELECT array_to_string( ...
Error handling in C code
...to call your error pointer as err and it must be the last argument. So the script can match the string err); then check if it's followed by if (*err. Actually in practice we made a macro called CER (check err return) and CEG (check err goto). So you don't need to type it out always when we just want...
what is “strict mode” and how is it used?
I've been looking over the JavaScript reference on the Mozilla Developer Network, and I came across something called "strict mode" . I read it over and I'm having trouble understanding what it does. Can someone briefly explain (in general) what its purpose is and how it is useful?
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Bash: infinite sleep (infinite blocking)
...r to f.e. test some other WM), X will terminate too because the .xinitrc script reached EOF.
So I added this at the end of my .xinitrc :
...
How do you use gcc to generate assembly code in Intel syntax?
...
Despite its incorrect filename att2intel.sed, that sed script converts the other way, from Intel to ATT.
– Jonathon Reinhart
Jun 28 '11 at 20:54
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Cookie blocked/not saved in IFRAME in Internet Explorer
..., when cookies are blocked, session identifier is not sent, and the target script throws a 'session not found' error.
(I've tried setting the session identifier into the form and loading it from POST variables. This would have worked, but for political reasons I couldn't do that.)
It is possible t...
How to get a reference to current module's attributes in Python
...packages\_pytest\config\__init__.py 90
*** <module> c:\Python\x86\37\Scripts\pytest.exe\__main__.py 7
Can handle python piped or interactive session.
Cons:
A kind of much precise and can return modules registered in an executable like for the pytest.exe which might not what you want.
inspe...
How to prevent moment.js from loading locales with webpack?
...
Here's another solution using postinstall script in NPM installer.
You can put a line to your package.json file:
{
"scripts": {
...
"postinstall": "find node_modules/moment/locale -type f -not -name 'en-gb.js' -not -name 'pl.js' -printf '%p\\n' | xargs rm"
...
using jquery $.ajax to call a PHP function
This may be a simple answer, but I'm using jQuery's $.ajax to call a PHP script. What I want to do is basically put that PHP script inside a function and call the PHP function from javascript.
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How can I echo a newline in a batch file?
...ch (.bat) file
SO:How does the Windows Command Interpreter (CMD.EXE) parse scripts?
Edit: Avoid echo.
This doesn't answer the question, as the question was about single echo that can output multiple lines.
But despite the other answers who suggests the use of echo. to create a new line, it shou...