大约有 23,000 项符合查询结果（耗时：0.0372秒） [XML]
fastest (low latency) method for Inter Process Communication between Java and C/C++
... The following code takes exactly 0.1 microsecond, while doing a primitive string concatenation only:
int j=123456789;
String ret = "my-record-key-" + j + "-in-db";
P.P.P.S - hope this is not too much off-topic, but finally I tried replacing Thread.sleep(0) with incrementing a static volatile in...
Maximum call stack size exceeded error
...
In my case, I was converting a large byte array into a string using the following:
String.fromCharCode.apply(null, new Uint16Array(bytes))
bytes contained several million entries, which is too big to fit on the stack.
...
Proper way to return JSON using node or Express
...
That response is a string too, if you want to send the response prettified, for some awkward reason, you could use something like JSON.stringify(anObject, null, 3)
It's important that you set the Content-Type header to application/json, too.
va...
How does the const constructor actually work?
...3
var baz1 = const Baz(const Foo(1, 1), "hello"); // $Baz$Foo$int$1$int$1$String$hello
var baz2 = const Baz(const Foo(1, 1), "hello"); // $Baz$Foo$int$1$int$1$String$hello
Constants are not recreated each time. They are canonicalized at compile time and stored in special lookup tables (where they...
Check if directory mounted with bash
...
You don't need to check if it returns a string. grep returns a non-zero exit status if there are no matches. There is no need for the test, or the subshell created by $(). if command | grep -q 'stuff'; then ...
– jordanm
Feb 2...
How do I capture the output of a script if it is being ran by the task scheduler?
...
Try this as the command string in Task Scheduler:
cmd /c yourscript.cmd > logall.txt
share
|
improve this answer
|
fol...
TransactionScope automatically escalating to MSDTC on some machines?
... transaction, even if both connections
were using identical connection
strings. In this case, a distributed
transaction adds unnecessary overhead
that decreases performance.
Starting with SQL Server 2008 and
version 3.5 of the .NET Framework,
local transactions are no longer
promo...
Fully custom validation error message with Rails
..._name method on the model class. The method is passed the column name as a string and returns the string to use in validation messages.
class User < ActiveRecord::Base
HUMANIZED_ATTRIBUTES = {
:email => "E-mail address"
}
def self.human_attribute_name(attr)
HUMANIZED_ATTRIBUTE...
Find first element by predicate
...ily, exposing opportunities for optimization. For example, "find the first String with three consecutive vowels" need not examine all the input strings. Stream operations are divided into intermediate (Stream-producing) operations and terminal (value- or side-effect-producing) operations. Intermedia...
How do I create a basic UIButton programmatically?
... })];
//set button title for state
[button setTitle:({
NSString* string = [NSString stringWithFormat:@"title words"];
string;
}) forState:({
UIControlState state = UIControlStateNormal;
state;
})];
//set selector
[button addTarget:self action...