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Why does the default parameterless constructor go away when you create one with parameters
In C#, C++ and Java, when you create a constructor taking parameters, the default parameterless one goes away. I have always just accepted this fact, but now I've started wondering why.
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Remove the error indicator from a previously-validated EditText widget
...is extension function
fun EditText.clearError() {
error = null
}
In Java:
editText.setError(null);
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leading zeros in rails
...show it as a string (padded with 0's) would be my recommendation. Apache's Java StringUtils had a nice pad method like that. Found this thread on padding: ruby-forum.com/topic/82137
– McStretch
Apr 27 '11 at 20:58
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How to tell git to ignore individual lines, i.e. gitignore for specific lines of code [duplicate]
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I had a similar issue writing java code. My solution was to markup code that I didn't want to commit and then add a pre-commit hook that would look for my markup:
#!/bin/bash
#
# This hook will look for code comments marked '//no-commit'
# - case-ins...
Parse a URI String into Name-Value Collection
...;
query_pairs.get(key).add(value);
}
return query_pairs;
}
UPDATE Java8 version
public Map<String, List<String>> splitQuery(URL url) {
if (Strings.isNullOrEmpty(url.getQuery())) {
return Collections.emptyMap();
}
return Arrays.stream(url.getQuery().split("&am...
What does it mean to “program to an interface”?
... I didn't understand why you needed them. If we're using a language like Java or C#, we already have inheritance and I viewed interfaces as a weaker form of inheritance and thought, "why bother?" In a sense I was right, you can think of interfaces as sort of a weak form of inheritance, but beyond...
Different ways of loading a file as an InputStream
...e.txt") will look for a file in your classpath at the following location: "java/lang/myfile.txt". If your path starts with a /, then it will be considered an absolute path, and will start searching from the root of the classpath. So calling String.class.getResourceAsStream("/myfile.txt") will look a...
How can I find out what version of git I'm running?
...t use git
It's also customizable, so you can change "which git" to "which java" or something, and change the error message.
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Get operating system info
.../BrowserNews/res_sniff.htm
How can I target only Internet Explorer 11 with JavaScript?
http://en.wikipedia.org/wiki/Trident_%28layout_engine%29
https://stackoverflow.com/a/17907562/1415724
http://msdn.microsoft.com/en-us/library/ie/bg182625(v=vs.110).aspx
An article on MSDN Blogs
An article on NCZOn...
What and where are the stack and heap?
... as scratch space". Cool. But where is it actually "set aside" in terms of Java memory structure?? Is it Heap memory/Non-heap memory/Other (Java memory structure as per betsol.com/2017/06/… )
– Jatin Shashoo
Jul 22 '18 at 6:22
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