大约有 43,000 项符合查询结果（耗时：0.0317秒） [XML]
Attempt to set a non-property-list object as an NSUserDefaults
...ry, NSString, NSData, NSNumber, and NSDate in NSUserDefaults.
You need to convert the object to NSData (like you have in some of the code) and store that NSData in NSUserDefaults. You can even store an NSArray of NSData if you need to.
When you read back the array you need to unarchive the NSData ...
Why is unsigned integer overflow defined behavior but signed integer overflow isn't?
...types a special case.
Also note that there is an exception if any type is converted to a signed type and the old value can no longer be represented. The behavior is then merely implementation-defined, although a signal may be raised.
C11 6.3.1.3
6.3.1.3 Signed and unsigned integers
Whe...
How to solve PHP error 'Notice: Array to string conversion in…'
...n that expects a string like: echo or print, then the PHP interpreter will convert your array to the literal string Array, throw this Notice and keep going. For example:
php> print(array(1,2,3))
PHP Notice: Array to string conversion in
/usr/local/lib/python2.7/dist-packages/phpsh/phpsh.php(...
Ignoring accented letters in string comparison
... it doesn't handle all accented letters, for example ð, ħ and ø are not converted to o, h and o respectively. Is there any way to handle these as well?
– Avrohom Yisroel
Aug 2 '17 at 14:07
...
printf() formatting for hex
...
¶6 The flag characters and their meanings are:
...
# The result is converted to an "alternative form". ... For x (or X)
conversion, a nonzero result has 0x (or 0X) prefixed to it. ...
(Emphasis added.)
Note that using %#X will use upper-case letters for the hex digits and 0X as the pr...
SQL Server: Get data for only the past year
...ost readable, IMO:
SELECT * FROM TABLE WHERE Date >
DATEADD(yy, -1, CONVERT(datetime, CONVERT(varchar, GETDATE(), 101)))
Which:
Gets now's datetime GETDATE() = #8/27/2008 10:23am#
Converts to a string with format 101 CONVERT(varchar, #8/27/2008 10:23am#, 101) = '8/27/2007'
Converts to a d...
Calculating Pearson correlation and significance in Python
...n is defined on a 2xN matrix. There is no generally applicable method that converts two dictionaries into a 2xN matrix, but you might use the array of pairs of dictionary values corresponding to the keys of the intersection of the keys of your dictionaries.
– winerd
...
Fastest way to convert Image to Byte array
...d Compress it and Send it to the receiver. To compress the image I need to convert it to a byte[].
6 Answers
...
How to remove time portion of date in C# in DateTime object only?
... for the date to have in object form. Format is only meaningful when it is converted into a string. What is actually stored in his object is not 06/26/2009 00:00:00.000, but 63381571200000000, which is the number of Ticks (1/100000000th of a second) since DateTime.MinValue (01/01/0001). If you are g...
When would I need a SecureString in .NET?
...g a Chicken-and-Egg problem, so even though most current scenarios require converting them back into regular strings to make any use of them at all, their existence in the framework now means better support for them in the future - at least to a point where your program doesn't have to be the weak l...