大约有 42,000 项符合查询结果（耗时：0.0547秒） [XML]
What is a stack trace, and how can I use it to debug my application errors?
...stack trace is a list of the method calls that the application was in the middle of when an Exception was thrown.
Simple Example
With the example given in the question, we can determine exactly where the exception was thrown in the application. Let's have a look at the stack trace:
Exception in t...
Use of alloc init instead of new
...ke to get more info, and know if following Apple's lead is sometimes a bad idea.)
– Senseful
Oct 11 '13 at 21:36
...
How do I rename a column in a database table using SQL?
...can do it with regular ALTER TABLE statement:
=> SELECT * FROM Test1;
id | foo | bar
----+-----+-----
2 | 1 | 2
=> ALTER TABLE Test1 RENAME COLUMN foo TO baz;
ALTER TABLE
=> SELECT * FROM Test1;
id | baz | bar
----+-----+-----
2 | 1 | 2
...
Convert UTF-8 encoded NSData to NSString
...ta is null-terminated, you should instead use -stringWithUTF8String: to avoid the extra \0 at the end.
NSString* newStr = [NSString stringWithUTF8String:[theData bytes]];
(Note that if the input is not properly UTF-8-encoded, you will get nil.)
Swift variant:
let newStr = String(data: data, encodi...
Xcode 6 Bug: Unknown class in Interface Builder file
... view controllers themselves).
Then with those objects selected, open the identity inspector and under "Custom Class" you should see the Module option. Click inside the Module text box, and press enter.
That's it! The current module for all of my custom objects must have been internally incorrectl...
Child inside parent with min-height: 100% not inheriting height
...ht can't inherit the height property: https://bugs.webkit.org/show_bug.cgi?id=26559
Apparently Firefox is affected too (can't test in IE at the moment)
Possible workaround:
add position:relative to #containment
add position:absolute to #containment-shadow-left
The bug doesn't show when the in...
How can I change the EditText text without triggering the Text Watcher?
...
can someone explain it?technically, i'am new in android, need more detail pls, thanks.
– Budi Mulyo
Nov 20 '19 at 3:37
add a comment
|...
Remove header and footer from window.print()
...
In Chrome it's possible to hide this automatic header/footer using
@page { margin: 0; }
Since the contents will extend to page's limits, the page printing header/footer will be absent. You should, of course, in this case, set some margins/paddings in...
Get filename and path from URI from mediastore
...
In the newest Android version (KitKat) this gives an error: the path String is null.
– Christopher Masser
Nov 29 '13 at 11:35
...
What part of Hindley-Milner do you not understand?
...] implies [below]".
If there are multiple expressions in [above], then consider them anded together; all of the [above] must be true in order to guarantee the [below].
: means has type
∈ means is in. (Likewise ∉ means "is not in".)
Γ is usually used to refer to an environment or context; in thi...