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How to use a variable for the key part of a map
...ivalent to ['a':1]. This can be confusing if you define a variable named a and that you want the value of to be the key in your map. If this is the case, then you must escape >the key by adding parenthesis..
– Michal Bernhard
Mar 2 '16 at 13:10
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Size of Matrix OpenCV
...ou please tell me how to obtain the size of a matrix in OpenCV?. I googled and I am still searching, but if any of you know the answer, please help me.
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“Code too large” compilation error in Java
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But you should clean this up!
Use .properties file to store this data, and load it via java.util.Properties
You can do this by placing the .properties file on your classpath, and use:
Properties properties = new Properties();
InputStream inputStream = getClass().getResourceAsStream("yourfile.p...
registerForRemoteNotificationTypes: is not supported in iOS 8.0 and later
... team is using both Xcode 5 (which doesn't know about any iOS 8 selectors) and Xcode 6, then you will need to use conditional compiling as follows:
#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 80000
if ([application respondsToSelector:@selector(registerUserNotificationSettings:)]) {
// use registe...
How to generate a core dump in Linux on a segmentation fault?
...s on what shell you are using. If you are using bash, then the ulimit command controls several settings relating to program execution, such as whether you should dump core. If you type
ulimit -c unlimited
then that will tell bash that its programs can dump cores of any size. You can specify a ...
Application Crashes With “Internal Error In The .NET Runtime”
...ce might be using. Suspect environmental problems if there is no obvious candidate, misbehaving malware scanners are notorious. If it repeats very poorly then suspect hardware problems like soft RAM errors.
share
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Android TextWatcher.afterTextChanged vs TextWatcher.onTextChanged
...t circumstances should I use afterTextChanged instead of onTextChanged and vice versa?
3 Answers
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JVM option -Xss - What does it do exactly?
...thread stack size", what does it mean exactly? Could anyone help me understand this?
4 Answers
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Custom exception type
...sfated posted above with the enhancement that stack traces work on Firefox and other browsers. It satisfies the same tests that he posted:
Usage:
throw new InvalidArgumentException();
var err = new InvalidArgumentException("Not yet...");
And it will behave is expected:
err instanceof InvalidAr...
`elif` in list comprehension conditionals
...-based language, he firmly resisted for a long time (tertiary expressions, and particularly their abuse, are sources of much obscurity in code). When he finally succumbed, he announced he had deliberately chosen a syntax that discouraged overuse. As usual, he did an elegant design job nevertheless.
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