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How to create a tuple with only one element
...x has some extra quirks to accommodate these. Empty tuples are constructed by an empty pair of parentheses; a tuple with one item is constructed by following a value with a comma (it is not sufficient to enclose a single value in parentheses). Ugly, but effective.
If you truly hate the trailing co...
PHP: exceptions vs errors?
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@DaveRandom E_NOTICE, E_WARNING are not "errors" by definition are they? I always thought them as 'messages' PHP displays to notify programmer that something might be wrong with the code s/he wrote.
– slhsen
Aug 14 '15 at 8:57
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How to test Spring Data repositories?
...Criteria API as well as the meta.model.
We verify manually defined queries by asking the EntityManager to create a Query instance for those (which effectively triggers query syntax validation).
We inspect the Metamodel for meta-data about the domain types handled to prepare is-new checks etc.
All ...
Gson custom seralizer for one variable (of many) in an object using TypeAdapter
...legateAdapter() that allows you to look up the adapter that Gson would use by default. The delegate adapters are extremely handy if you just want to tweak the standard behavior. And unlike full custom type adapters, they'll stay up-to-date automatically as you add and remove fields.
public abstract...
How to avoid overflow in expr. A * B - C * D
...st general solution is to use a representation that can't overflow, either by using a long integer library (e.g. http://gmplib.org/) or representing using a struct or array and implementing a kind of long multiplication (i.e. separating each number to two 32bit halves and performing the multiplicati...
“aapt” IOException error=2, No such file or directory" why can't I build my gradle on jenkins?
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building chrome on Ubuntu 14.04 and this helped get me by the same error I was having with aapt. Note ldd aapt now works, and shows dependencies. Previously it stated that the program wasn't a dynamic executable "not a dynamic executable". Now on to the next problem!
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Which is faster: while(1) or while(2)?
This was an interview question asked by a senior manager.
23 Answers
23
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call a static method inside a class?
... Logically speaking, there is no self when invoking a static method. By definition: the static method is callable from anywhere, and does not receive a "self" parameter. Nevertheless, I see the convenience of that php syntax, so that you don't have to write MyClassName::. I'm used to staticall...
Fit background image to div
...can achieve this with the background-size property, which is now supported by most browsers.
To scale the background image to fit inside the div:
background-size: contain;
To scale the background image to cover the whole div:
background-size: cover;
JSFiddle example
There also exists a filte...
Git SVN error: a Git process crashed in the repository earlier
...ck file like Schwern stated will solve this
problem.
You can remove it by running rm -f ./.git/index.lock
The rm command is used to remove (delete) files and directories.
The -f stands for force which tells your computer to remove the files without prompting for confirmation
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