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What is the right way to check for a null string in Objective-C?
...variable) the same as if (variable != nil) in Objective-C
h
I think your error is related to something else as you shouldn't need to do the extra checking.
Also see this related question: Proper checking of nil sqlite text column
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What is the difference between const_iterator and non-const iterator in the C++ STL?
...};
std::vector<int>::const_iterator cit = v.begin();
// Compile time error: cannot modify container with const_iterator.
//*cit = 1;
As shown above, v.begin() is const overloaded, and returns either iterator or const_iterator depending on the const-ness of the container variable:
How does ...
What is a method group in C#?
I have often encountered an error such as "cannot convert from 'method group' to 'string'" in cases like:
5 Answers
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log all sql queries
...andlers section in case you get Unable to add handler 'console': 'console' error: 'console':{ 'level':'DEBUG', 'class':'logging.StreamHandler', 'formatter': 'verbose', 'stream': sys.stderr, },
– Don Grem
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How to display full (non-truncated) dataframe information in html when converting from pandas datafr
...er is correct, i.e. it should not be set to None. Otherwise, will get ValueError: Value must have type '<class 'int'>' error.
– xpt
Aug 4 '16 at 15:41
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How to add an extra column to a NumPy array
...ting "could not broadcast input array from shape (985) into shape (985,1)" error. What is wrong with my code? Code: np.hstack(data, data1)
– Outlier
Dec 10 '14 at 15:28
6
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difference between throw and throw new Exception()
...);
}
I'd recommend using:
the first if you want to do some cleanup in error situation without destroying information or adding information about the error.
the third if you want to add more information about the error.
the second if you want to hide information (from untrusted users).
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Ineligible Devices section appeared in Xcode 6.x.x
... lot of options (10 23 29 answers for this question!), that can cause this error. And no one is 100% solve this issue. Here is summarise of all solutions.
First of all:
0. Update to latest Xcode version
Most of the reasons, that cause this problem fixed in Xcode version 6.3.1 (6D1002 published Apr...
What is the best method to merge two PHP objects?
...e to override all the relevant magic methods. You'll probably find syntax errors since I just entered it off the top of my head.
class Compositor {
private $obj_a;
private $obj_b;
public function __construct($obj_a, $obj_b) {
$this->obj_a = $obj_a;
$this->obj_b = $obj_b;
}
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How can I SELECT rows with MAX(Column value), DISTINCT by another column in SQL?
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sorry dude, #1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '( ) OVER ( PARTITION BY krd ORDER BY daytime DESC ) N FROM @rapsa ) M WHERE N = ' at line 1
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