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Why does !{}[true] evaluate to true in JavaScript?
...undefined) must therefore be defined. If something is defined then it's usually interpreted as true.
– OozeMeister
Oct 31 '13 at 16:50
7
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Wait for page load in Selenium
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does this really work all the time? Maybe Im missing something from your code but you are waiting for the dom to be in ready state. But consider that if your code executes too fast the previous page might not be unloaded yet and it will ...
SQL WHERE.. IN clause multiple columns
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or more generally SELECT * FROM table INNER JOIN otherTable ON ( table.x = otherTable.a AND table.y = otherTable.b)
– ala
Jul 16 '09 at 7:56
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How to print a groupby object
...like a bug to me. I created an issue.
But a groupby operation doesn't actually return a DataFrame sorted by group. The .head() method is a little misleading here -- it's just a convenience feature to let you re-examine the object (in this case, df) that you grouped. The result of groupby is separat...
mysql_fetch_array()/mysql_fetch_assoc()/mysql_fetch_row()/mysql_num_rows etc… expects parameter 1 to
... advice about how to properly catch errors in future, it should (IMHO) actually answer the specific question (ie explain why there's an error in this case).
– Sepster
Apr 23 '13 at 22:17
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What does Provider in JAX-RS mean?
...tomizing the JAX-RS runtime. You can think of them as plugins that (potentially) alter the behavior of the runtime, in order to accomplish a set of (program defined) goals.
Providers are not the same as resources classes, they exist, conceptually, at a level in-between resources classes and the JAX...
Android AsyncTask testing with Android Test Framework
...some service which worked with Executors, and I needed to have my service callbacks sync-ed with the test methods from my ApplicationTestCase classes. Usually the test method itself finished before the callback would be accessed, so the data sent via the callbacks would not be tested. Tried applying...
Editing legend (text) labels in ggplot
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@Sathish As you can see, the title of the y-axis is smaller than the title in the x-axis. The different sizes are used to illustrate the possibilities and its consequences. Thus the code used in the answer is correct imo.
– Jaap
Oct 14 '16 ...
How do I reference a javascript object property with a hyphen in it?
Using this script to make a style object of all the inherited etc styles.
11 Answers
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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...