大约有 30,000 项符合查询结果（耗时：0.0500秒） [XML]
Cocoa Core Data efficient way to count entities
...ties:NO]; //Omit subentities. Default is YES (i.e. include subentities)
NSError *err;
NSUInteger count = [moc countForFetchRequest:request error:&err];
if(count == NSNotFound) {
//Handle error
}
[request release];
s...
Location Manager Error : (KCLErrorDomain error 0)
Why does this error occur?
15 Answers
15
...
nodeJs callbacks simple example
... this next line:
usingItNow(myCallback);
With Respect to the Node-Style Error Conventions
Costa asked what this would look like if we were to honor the node error callback conventions.
In this convention, the callback should expect to receive at least one argument, the first argument, as an err...
PHP: How to use array_filter() to filter array keys?
...sallowed).
– nfplee
Sep 7 '14 at 13:05
add a comment
|
...
How do I catch an Ajax query post error?
I would like to catch the error and show the appropriate message if the Ajax request fails.
8 Answers
...
CMake output/build directory
..." insourcesubdir)
IF(insource OR insourcesubdir)
MESSAGE(FATAL_ERROR "${MSG}")
ENDIF(insource OR insourcesubdir)
ENDMACRO(MACRO_ENSURE_OUT_OF_SOURCE_BUILD)
MACRO_ENSURE_OUT_OF_SOURCE_BUILD(
"${CMAKE_PROJECT_NAME} requires an out of source build."
)
The above macro comes from a...
How to do exponential and logarithmic curve fitting in Python? I found only polynomial fitting
...
"""
plt.plot(x, y, 'ro',label="Original Data")
"""
brutal force to avoid errors
"""
x = np.array(x, dtype=float) #transform your data in a numpy array of floats
y = np.array(y, dtype=float) #so the curve_fit can work
"""
create a function to fit with your data. a, b, c and d are the coeffici...
Disabling Minimize & Maximize On WinForm?
...
answered Jul 27 '17 at 6:05
BracketsBrackets
37433 silver badges1111 bronze badges
...
Convert dmesg timestamp to custom date format
...d -1
.clock : 32103895072.444568
# uptime
15:54:05 up 371 days, 19:09, 4 users, load average: 3.41, 3.62, 3.57
# cat /proc/uptime
32123362.57 638648955.00
Accounting for the CPU uptime being in milliseconds, there's an offset of nearly 5 1/2 hours here. So I revised th...
Objective-C declared @property attributes (nonatomic, copy, strong, weak)
... In addition to the comment of @JohnBushnell there are many other errors and inaccuracies in this answer. It has also not aged well, so is somwhat historical. Go look elsewhere if you seek an answer to this question.
– CRD
Mar 1 '18 at 5:22
...