大约有 13,700 项符合查询结果（耗时：0.0320秒） [XML]
Detect backspace in empty UITextField
...yTextField
- (void)deleteBackward {
[super deleteBackward];
if ([_myDelegate respondsToSelector:@selector(textFieldDidDelete)]){
[_myDelegate textFieldDidDelete];
}
}
@end
Now simply add MyTextFieldDelegate to your UIViewController and set your UITextFields myDelegate to sel...
Fastest way to flatten / un-flatten nested JSON objects
...is implementation also has a prototype pollution bug, e.g. unflatten({"foo.__proto__.bar": 42})
– Alex Brasetvik
Feb 19 at 14:06
add a comment
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Way to ng-repeat defined number of times instead of repeating over array?
...
You could also use _.range from Underscore or lodash to create the array: $scope.range = _.range(0, n);
– afternoon
Dec 12 '13 at 15:03
...
MySQL case insensitive select
...ble statement this way instead: varchar(20) CHARACTER SET utf8 COLLATE utf8_bin
– gregthegeek
Mar 19 '14 at 18:56
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How to add images to README.md on GitHub?
...ectory not the repo, so if you have 'myimage.png' in the same dir as 'about_pics.md' then the markup is:
– Rich
Mar 8 '17 at 2:06
...
Which comment style should I use in batch files?
...his is a comment, the caret is ignored^
echo This line is printed
REM This_is_a_comment_the_caret_appends_the_next_line^
echo This line is part of the remark
REM followed by some characters .:\/= works a bit different, it doesn't comment an ampersand, so you can use it as inline comment.
echo Fi...
Convenient C++ struct initialisation
... MSVC.
#include <iostream>
#include <filesystem>
struct hello_world {
const char* hello;
const char* world;
};
int main ()
{
hello_world hw = {
.hello = "hello, ",
.world = "world!"
};
std::cout << hw.hello << hw.world << std::en...
How do I remove code duplication between similar const and non-const member functions?
...& get() const {
return c;
}
char & get() {
return const_cast<char &>(static_cast<const C &>(*this).get());
}
char c;
};
The two casts and function call may be ugly but it's correct. Meyers has a thorough explanation why.
...
How to use a class from one C# project with another C# project
...de import functionA
functionA()
class ClassName(object):
def __init__(object, parameter):
object.parameter = value
The library file or "façade" file containing classes, methods or functions you want to import.
class class1(object):
"""description of class"""
class Cla...
C dynamically growing array
...ve omitted safety checks for brevity)
typedef struct {
int *array;
size_t used;
size_t size;
} Array;
void initArray(Array *a, size_t initialSize) {
a->array = malloc(initialSize * sizeof(int));
a->used = 0;
a->size = initialSize;
}
void insertArray(Array *a, int element) {
...