大约有 40,000 项符合查询结果（耗时：0.0655秒） [XML]
What is the correct way to get a subarray in Scala?
...000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 4...
Extract a substring according to a pattern
... sub to replace it with a colon first. For example, if the separator were _ then string <- sub("_", ":", string)
c(read.dcf(textConnection(string)))
## [1] "E001" "E002" "E003"
7) separate
7a) Using tidyr::separate we create a data frame with two columns, one for the part before the colon and o...
When should I use double or single quotes in JavaScript?
...ariable interpolation, multi-line strings, and more.
Note that JSON is formally specified to use double quotes, which may be worth considering depending on system requirements.
share
|
improve this ...
How to detect internet speed in JavaScript?
...lete?
– Jakub Hampl
Apr 3 '11 at 13:32
2
@Jakub: Any of several ways. If you do a form submission...
Short circuit Array.forEach like calling break
...terribly pretty. A traditional for loop might be more appropriate if you really need to break inside it.
Use Array#some
Instead, use Array#some:
[1, 2, 3].some(function(el) {
console.log(el);
return el === 2;
});
This works because some returns true as soon as any of the callba...
CSS @font-face not working with Firefox, but working with Chrome and IE
...
LOCALLY RUNNING THE SITE (file:///)
Firefox comes with a very strict "file uri origin" (file:///) policy by default: to have it to behave just as other browsers, go to about:config, filter by fileuri and toggle the following pr...
How do I make a semi transparent background?
...oft.gradient(startColorstr=#AARRGGBBAA,endColorstr=#AARRGGBBAA); its basically a gradient of a static color but with transparency.
– Tarun
Jan 27 '11 at 5:23
...
How do I insert NULL values using PDO?
...akes a variable, to reference, and doesn't pull in a value at the time of calling bindParam. I found this in a comment on the php docs:
bindValue(':param', null, PDO::PARAM_INT);
EDIT: P.S. You may be tempted to do this bindValue(':param', null, PDO::PARAM_NULL); but it did not work for everybody...
Is there an onSelect event or equivalent for HTML ?
...heir editor view fails to load jQuery used in the example for readability. All above just tested with mouse interaction; to get this keyboard friendly this hack likely needs additional work, as at least old IEs happily trigger the change event before you've had a chance to get to choice "C".
...
How do I change the color of the text in a UIPickerView under iOS 7?
...spaced 35 pts apart for a picker height of 180.
Swift 3:
func pickerView(_ pickerView: UIPickerView, attributedTitleForRow row: Int, forComponent component: Int) -> NSAttributedString? {
let string = "myString"
return NSAttributedString(string: string, attributes: [NSForegroundColorAtt...