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Proper usage of Optional.ifPresent()
I am trying to understand the ifPresent() method of the Optional API in Java 8.
5 Answers
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Something like 'contains any' for Java set?
... Collections.disjoint(A, B) work? From the documentation:
Returns true if the two specified collections have no elements in common.
Thus, the method returns false if the collections contains any common elements.
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Is it good practice to use the xor operator for boolean checks? [closed]
...What @RobertGrant said). Most humans would understand the first one easier if they know what xor is (which is pretty useful to know if you're in the field of computing...)
– Harold R. Eason
Nov 22 '13 at 20:53
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How to initialize array to 0 in C?
...obal variables and static variables are automatically initialized to zero. If you have simply
char ZEROARRAY[1024];
at global scope it will be all zeros at runtime. But actually there is a shorthand syntax if you had a local array. If an array is partially initialized, elements that are not initi...
How can I count the number of children?
...d, so this counts how many <li> under <ul> elements you have...if there are sub-children, use "ul > li" instead to get only direct children. If you have other <ul> elements in your page, just change the selector to match only his one, for example if it has an ID you'd use "#myL...
What is $@ in Bash? [duplicate]
...th the value of each parameter separated by the first character of the IFS special variable. That is, "$*" is equivalent to "$1c$2c...", where c is the first character of the value of the IFS variable. If IFS is unset, the parameters are separated by spaces. If IFS is null, the parameters ...
Remove the image from a imageview Android [duplicate]
... a gallery of images. By touching the user request to load the next image. If the next image isn't found in the server or takes time to load I need the old image to be empty.
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Is there a way to programmatically tell if particular block of memory was not freed by FastMM?
I am trying to detect if a block of memory was not freed. Of course, the manager tells me that by dialog box or log file, but what if I would like to store results in a database? For example I would like to have in a database table a names of routines which allocated given blocks.
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How to remove and clear all localStorage data [duplicate]
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window.localStorage.clear(); //if working on ionic i.e
– Guille Acosta
Jan 4 '16 at 1:59
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Check cell for a specific letter or set of letters
...adsheet, I want to use a formula that will output a certain text or number if a certain cell contains certain letters.
4 An...