大约有 41,000 项符合查询结果（耗时：0.0692秒） [XML]
What is the difference between native code, machine code and assembly code?
...ted somewhere else. But that could be anywhere, depending on the location selected by the JIT compiler, so the debugger just starts numbering addresses from 0 at the start of the method.
The second column is the machine code. The actual 1s and 0s that the CPU executes. Machine code, like here, i...
Whether a variable is undefined [duplicate]
...
jQuery.val() and .text() will never return 'undefined' for an empty selection. It always returns an empty string (i.e. ""). .html() will return null if the element doesn't exist though.You need to do:
if(page_name != '')
For other variables that don't come from something like jQuery.val(...
How to have favicon / icon set when bookmarklet dragged to toolbar?
...for your bookmarklet.
Open Bookmarks Manager, click Organize dropdown, and select Export, save your bookmarks as html file.
Open that html file in text editor.
Find the bookmark you just created, lets say its Gmail bookmark, you should have an html code for it, that looks like this:
<DT><...
How do I set ${user} in Eclipse to get the correct @author tag? [duplicate]
... Preferences > Java > Code Style > Code Templates > Comments
Select Types and edit the template to insert another value (possibly a fixed one for now, or change the user.name property as mmyers suggests)
/**
* @author myUserValue
*
* ${tags}
*/
...
What is the Auto-Alignment Shortcut Key in Eclipse?
...
Ctrl+Shift+F to invoke the Auto Formatter
Ctrl+I to indent the selected part (or all) of you code.
share
|
improve this answer
|
follow
|
...
CSS rule to apply only if element has BOTH classes [duplicate]
...
So, this will not select <div class="abc"> because it lacks xyz?
– Majid Fouladpour
Apr 26 '11 at 21:30
5
...
PHP date yesterday [duplicate]
...ands ISO8601 for time intervals, but date() doesn't. At the end of course: Select the one you better fit your needs :)
– KingCrunch
Apr 12 '12 at 8:19
...
Get element type with jQuery
...e type of an element with jQuery? For example, is the element a div, span, select, or input?
7 Answers
...
Remove a JSON attribute [duplicate]
...
The selected answer would work for as long as you know the key itself that you want to delete but if it should be truly dynamic you would need to use the [] notation instead of the dot notation.
For example:
var keyToDelete = ...
How do I make a list of data frames?
...e of your choice.
GETDF_FROMLIST <- function(DF_LIST, ITEM_LOC){
DF_SELECTED <- DF_LIST[[ITEM_LOC]]
return(DF_SELECTED)
}
Now get the one you want.
D1 <- GETDF_FROMLIST(mylist, 1)
D2 <- GETDF_FROMLIST(mylist, 2)
D3 <- GETDF_FROMLIST(mylist, 3)
D4 <- GETDF_FROMLIST(mylist,...