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Objective-C: Property / instance variable in category
...e, it wouldn't work.
Fortunately, the Objective-C runtime has this thing called Associated Objects that can do exactly what you're wanting:
#import <objc/runtime.h>
static void *MyClassResultKey;
@implementation MyClass
- (NSString *)test {
NSString *result = objc_getAssociatedObject(sel...
How to disable Golang unused import error
...
Adding an underscore (_) before a package name will ignore the unused import error.
Here is an example of how you could use it:
import (
"log"
"database/sql"
_ "github.com/go-sql-driver/mysql"
)
To import a package solely for i...
Multiline strings in VB.NET
...ring is called implicit line continuation. It has to do with removing the _ from a multi-line statement or expression. This does remove the need to terminate a multiline string with _ but there is still no mult-line string literal in VB.
Example for multiline string
Visual Studio 2008
Dim x = "...
Can't start Eclipse - Java was started but returned exit code=13
...ng Eclipse. I ran into this problem when trying to run Eclipse, having installed version 4.2 only minutes ago.
44 Answers
...
How do you find out the type of an object (in Swift)?
... adding as! AnyClass after the type but then program crashes with some "EXC_BAD_INSTRUCTION" and other jiberrish that I cannot decipher.
– LightningStryk
Mar 10 '17 at 0:36
...
How do I convert datetime to ISO 8601 in PHP
... than ISO8601 (the colon is missing in the TZ, ISO8601 expects times to be all with OR all without the colon, not a mixture) - date('c') does produces a strict ISO 8601 valid date - This could cause hard to trace bugs if code expects a strict ISO 8601 datetime format. Ref: en.wikipedia.org/wiki/ISO_...
What is the difference between Numpy's array() and asarray() functions?
... use one rather than the other? They seem to generate identical output for all the inputs I can think of.
6 Answers
...
Add column with constant value to pandas dataframe [duplicate]
...ods to gain some intuition for alignment works with objects that have partially, totally, and not-aligned-all aligned indices. For example here's how DataFrame.align() works with partially aligned indices:
In [7]: from pandas import DataFrame
In [8]: from numpy.random import randint
In [9]: df = ...
Preventing console window from closing on Visual Studio C/C++ Console application
... (15.9.4) there is an option:
Tools->Options->Debugging->Automatically close the console
The corresponding fragment from the Visual Studio documentation:
Automatically close the console when debugging stops:
Tells Visual Studio to close the console at the end of a debugging session.
...
How to launch Safari and open URL from iOS app
...
@g_fred. Why would he not be able to include a Swift version?
– ericgu
Mar 24 '15 at 13:21
2
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