大约有 44,000 项符合查询结果（耗时：0.0598秒） [XML]
A variable modified inside a while loop is not remembered
...=0;i<${#arr[*]};++i)) { line=${arr[i]};
...
}
Variable $lines can be converted to an array without starting a new sub-shell. The characters \ and n has to be converted to some character (e.g. a real new line character) and use the IFS (Internal Field Separator) variable to split the string int...
In javascript, is an empty string always false as a boolean?
...ly, when the operands of == have different types, JavaScript tries hard to convert them to Numbers, according to their value, (using operations the standard calls ToNumber and ToPrimitive), and then it internally applies ===. But when you use === directly, the types are not converted, so comparing ...
Array to String PHP?
What is the best method for converting a PHP array into a string?
I have the variable $type which is an array of types.
...
Why is === faster than == in PHP?
...
Because the equality operator == coerces, or converts, the data type temporarily to see if it’s equal to the other operand, whereas === (the identity operator) doesn’t need to do any converting whatsoever and thus less work is done, which makes it faster.
...
What's the best CRLF (carriage return, line feed) handling strategy with Git?
...
Don't convert line endings. It's not the VCS's job to interpret data -- just store and version it. Every modern text editor can read both kinds of line endings anyway.
...
HTML5 Canvas Resize (Downscale) Image High Quality?
...sCtx.getImageData(0, 0, tw, th);
var tByteBuffer = imgRes.data;
// convert float32 array into a UInt8Clamped Array
var pxIndex = 0; //
for (sIndex = 0, tIndex = 0; pxIndex < tw * th; sIndex += 3, tIndex += 4, pxIndex++) {
tByteBuffer[tIndex] = Math.ceil(tBuffer[sIndex]);...
Double exclamation points? [duplicate]
...
This converts a value to a boolean and ensures a boolean type.
"foo" // Evaluates to "foo".
!"foo" // Evaluates to false.
!!"foo" // Evaluates to true.
If foo.bar is passed through, then it may not be 0 but some oth...
What is the difference between JSF, Servlet and JSP?
...st/response work from your hands, such as gathering user input, validating/converting them, putting them in model objects, invoking actions and rendering the response. This way you end up with basically a JSP or Facelets (XHTML) page for View and a JavaBean class as Model. The JSF components are use...
Creating a BLOB from a Base64 string in JavaScript
...gth; i++) {
byteNumbers[i] = byteCharacters.charCodeAt(i);
}
You can convert this array of byte values into a real typed byte array by passing it to the Uint8Array constructor.
const byteArray = new Uint8Array(byteNumbers);
This in turn can be converted to a BLOB by wrapping it in an array ...
How to do a case sensitive search in WHERE clause (I'm using SQL Server)?
...
You can make the query using convert to varbinary – it’s very easy.
Example:
Select * from your_table where convert(varbinary, your_column) = convert(varbinary, 'aBcD')
sh...