大约有 31,840 项符合查询结果（耗时：0.0293秒） [XML]
Odd behavior when Java converts int to byte?
...t it as an int (32 bits) you simply copy the 1 to the left 24 times.
Now, one way to read a negative two's complement number is to start with the least significant bit, move left until you find the first 1, then invert every bit afterwards. The resulting number is the positive version of that numbe...
Extract substring using regexp in plain bash
...PM (CST)
$ while read a b time x; do [[ $b == - ]] && echo $time; done < file.txt
another solution with bash regex :
$ [[ "US/Central - 10:26 PM (CST)" =~ -[[:space:]]*([0-9]{2}:[0-9]{2}) ]] &&
echo ${BASH_REMATCH[1]}
another solution using grep and look-around advanced r...
CSS: How to position two elements on top of each other, without specifying a height?
...st of all, you really should be including the position on absolutely positioned elements or you will come across odd and confusing behavior; you probably want to add top: 0; left: 0 to the CSS for both of your absolutely positioned elements. You'll also want to have position: relative on .container_...
Ignore with CSS?
... can "hide" the br tags and they won't have an effect:
br {
display: none;
}
If you only want to hide some within a specific heading type, just make your css more specific.
h3 br {
display: none;
}
share
...
Iterator Loop vs index loop [duplicate]
I'm reviewing my knowledge on C++ and I've stumbled upon iterators. One thing I want to know is what makes them so special and I want to know why this:
...
How do you merge two Git repositories?
...
Or read Eric Lee's "Merging Two Git Repositories Into One Repository Without Losing File History" saintgimp.org/2013/01/22/…
– Jifeng Zhang
Oct 8 '13 at 12:17
...
Why is Java's Iterator not an Iterable?
...nerally points to a single instance in a collection. Iterable implies that one may obtain an iterator from an object to traverse over its elements - and there's no need to iterate over a single instance, which is what an iterator represents.
...
How do you remove a Cookie in a Java Servlet
...e is actually defined by the tuple of it's name, path, and domain. If any one of those three is different, or there is more than one cookie of the same name, but defined with paths/domains that may still be visible for the URL in question, you'll still see that cookie passed on the request. E.g. i...
Get the value in an input text box
...nstead of "val" you may look at my profile
– TheRedstoneTaco
Jan 18 '18 at 3:38
...
How many Activities vs Fragments?
...nd source code here). The demo that most closely matches the tutorial mentioned in the question is the one called "Layout" in the app; or FragmentLayoutSupport in the source code.
In this demo, the logic has been moved out of the Activity and into the Fragment. The TitlesFragment actually contains ...