大约有 41,000 项符合查询结果（耗时：0.0201秒） [XML]
grep exclude multiple strings
...e.txt:
abc
def
ghi
jkl
grep command using -E option with a pipe between tokens in a string:
grep -Ev 'def|jkl' filename.txt
prints:
abc
ghi
Command using -v option with pipe between tokens surrounded by parens:
egrep -v '(def|jkl)' filename.txt
prints:
abc
ghi
...
Getting raw SQL query string from PDO prepared statements
...ut, the second parameter is not seen as a string: string(115) "INSERT INTO tokens (token_type, token_hash, user_id) VALUES ('resetpassword', hzFs5RLMpKwTeShTjP9AkTA2jtxXls86, 1);"
– Kerwin Sneijders
Sep 10 '18 at 0:34
...
Is key-value observation (KVO) available in Swift?
...d in Using Key-Value Observing in Swift:
class MyObject {
private var token: NSKeyValueObservation
var objectToObserve = Foo()
init() {
token = objectToObserve.observe(\.bar) { [weak self] object, change in // the `[weak self]` is to avoid strong reference cycle; obviously, i...
Batch file to delete files older than N days
...[1]: Year-Month-Day
:epoch
setlocal ENABLEDELAYEDEXPANSION
for /f "tokens=1,2,3 delims=-" %%d in ('echo %1') do set Years=%%d& set Months=%%e& set Days=%%f
if "!Months:~0,1!"=="0" set Months=!Months:~1,1!
if "!Days:~0,1!"=="0" set Days=!Days:~1,1!
set /a Days=Days*day
...
How to handle both a single item and an array for the same property using JSON.net
...bjectType, object existingValue, JsonSerializer serializer)
{
JToken token = JToken.Load(reader);
if (token.Type == JTokenType.Array)
{
return token.ToObject<List<T>>();
}
return new List<T> { token.ToObject<T>() };
...
What do the parentheses around a function name mean?
...heses, but expansion of a function-like macro only takes place if the next token is a left parenthesis (C99, 6.10.3§10), thus foo (int* bar) would get replaced, but not (foo) (int *bar) (the next token after foo is ))
– Virgile
Nov 28 '12 at 9:48
...
How do I match any character across multiple lines in a regular expression?
... = "abcde\n fghij<Foobar>"; expression = '(.*)<Foobar>*'; [tokens,matches] = regexp(str,expression,'tokens','match'); (tokens contain a abcde\n fghij item).
Also, in all of boost's regex grammars the dot matches line breaks by default. Boost's ECMAScript grammar allows you to tu...
Asynchronously wait for Task to complete with timeout
...at runtime.
int timeout = 1000;
var task = SomeOperationAsync(cancellationToken);
if (await Task.WhenAny(task, Task.Delay(timeout, cancellationToken)) == task)
{
// Task completed within timeout.
// Consider that the task may have faulted or been canceled.
// We re-await the task so tha...
Is there any way I can define a variable in LaTeX?
...
I think you probably want to use a token list for this purpose:
to set up the token list
\newtoks\packagename
to assign the name:
\packagename={New Name for the package}
to put the name into your output:
\the\packagename.
...
What does the @ symbol represent in objective-c?
...Because the @ isn't valid in any context in C except a string literal, the tokenizer (an early and simple step in the compiler) could be modified to simply look for the @ character outside of a string constant (the tokenizer understands string literals, so it is in a position to distinguish this). W...