大约有 47,000 项符合查询结果（耗时：0.0609秒） [XML]
Why does Oracle 9i treat an empty string as NULL?
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@sehe the confusing bit for me is select 1 from dual where ('' is null)
– matt freake
Aug 22 '13 at 15:58
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How to scroll to specific item using jQuery?
... so:
$('html,body').animate({scrollTop: some_element.offset().top});
We select both html and body because the document scroller could be on either and it is hard to determine which. For modern browsers you can get away with $(document.body).
Or, to go to the top of the page:
$('html,body').anim...
Make div stay at bottom of page's content all the time even when there are scrollbars
...on as above example have bug( somewhere error ) for me. Variation from the selected answer.
html,body {
height: 100%
}
#nonFooter {
min-height: 100%;
position:relative;
/* Firefox */
min-height: -moz-calc(100% - 30px);
/* WebKit */
min-height: -webkit-calc(100% - 30px);...
Why I can't change directories using “cd”?
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To make a bash script that will cd to a select directory :
Create the script file
#!/bin/sh
# file : /scripts/cdjava
#
cd /home/askgelal/projects/java
Then create an alias in your startup file.
#!/bin/sh
# file /scripts/mastercode.sh
#
alias cdjava='. /scrip...
html onchange event not working
...ck into a field and get a dropdown of previously entered text, and you can select from among your choices using a mouse click. Keystroke trapping will not detect either of these types of changes.
Sadly, there is no "onchange" event that reports changes immediately, at least as far as I know. But th...
XAMPP - Port 80 in use by “Unable to open process” with PID 4! 12
...y clicking on the "Config" button on the same line as the "Apache" module, select the "httpd.conf" file in the dropdown, then change the "Listen 80" line to "Listen 8080". Save the file and close it.
Now it avoids Port 80 and uses Port 8080 instead without issue. The only additional thing you need ...
How to get visitor's location (i.e. country) using geolocation? [duplicate]
..., or you just want to test things out, signup for the free plan. Otherwise select one of the paid plans below. - ipinfo.io/pricing
– pdeschen
Oct 28 '17 at 21:10
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Package cairo was not found in the pkg-config search path. Node j.s install canvas issue
...y installing these ones:
brew install cairo
brew install pkg-config
xcode-select --install
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javac : command not found
...es --configure java to switch between them.
To find java location of java selected in alternatives
readlink -f $(which java)
In my case:
/usr/java/jdk1.8.0_241-amd64/jre/bin/java
So I set following in .bashrc to:
export JAVA_HOME=/usr/java/jdk1.8.0_241-amd64/jre/bin/java
export JAVAC_HOM...
Converting many 'if else' statements to a cleaner approach [duplicate]
...s not what you need here, this isn't modelling a finite state machine it's selecting a different conversion strategy based on the input type so the strategy pattern is more appropriate.
– Paolo
Jan 3 '13 at 13:55
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