大约有 40,000 项符合查询结果（耗时：0.0650秒） [XML]
What do querySelectorAll and getElementsBy* methods return?
...Name (and similar functions like getElementsByTagName and querySelectorAll ) work the same as getElementById or do they return an array of elements?
...
Remove last character of a StringBuilder?
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@Harish - and possibly not at all, if the optimizer unrolls the first loop iteration.
– Stephen C
Aug 27 '12 at 14:28
7
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How to select/get drop down option in Selenium 2
...elect(driver.findElement(By.xpath("//path_to_drop_down")));
select.deselectAll();
select.selectByVisibleText("Value1");
To get the first selected value:
WebElement option = select.getFirstSelectedOption()
share
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powershell - extract file name and extension
... Any particular infoyou're after? Just pipe a file to Get-Member to reveal all of it;s members or browse to MSDN to find the official help.
– Shay Levy
Mar 13 '13 at 7:49
add ...
How do I set a variable to the output of a command in Bash?
... be done with $(command) or "$(command)", which I find easier to read, and allows for nesting.
OUTPUT=$(ls -1)
echo "${OUTPUT}"
MULTILINE=$(ls \
-1)
echo "${MULTILINE}"
Quoting (") does matter to preserve multi-line variable values; it is optional on the right-hand side of an assignment, as w...
How do I measure request and response times at once using cURL?
...me="curl -w \"@$HOME/.curl-format.txt\" -o NUL -s "
Then you can simply call...
curltime wordpress.org
Thanks to commenter Pete Doyle!
Make a Linux/Mac stand-alone script
This script does not require a separate .txt file to contain the formatting.
Create a new file, curltime, somewhere in ...
PDO closing connection
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close the connection, you need to destroy the object by ensuring that
all remaining references to it are deleted--you do this by assigning
NULL to the variable that holds the object. If you don't do this
explicitly, PHP will automatically close the connection when your
script ends.
Note...
How to make good reproducible pandas examples
...s.
Disclaimer: Writing a good question is HARD.
The Good:
do include small* example DataFrame, either as runnable code:
In [1]: df = pd.DataFrame([[1, 2], [1, 3], [4, 6]], columns=['A', 'B'])
or make it "copy and pasteable" using pd.read_clipboard(sep='\s\s+'), you can format the text for Sta...
What exactly is node.js used for? [closed]
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What can we build with NodeJS:
REST APIs and Backend Applications
Real-Time services (Chat, Games etc)
Blogs, CMS, Social Applications.
Utilities and Tools
Anything that is not CPU intensive.
...
How to detect a Christmas Tree? [closed]
... can be broken down into about 3 steps. First I apply a threshold (or actually, the logical "or" of two separate and distinct thresholds). As with many of the other answers, I assumed that the Christmas tree would be one of the brighter objects in the scene, so the first threshold is just a simple...