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Is there an eval() function in Java? [duplicate]
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You can use the ScriptEngine class and evaluate it as a Javascript string.
ScriptEngineManager manager = new ScriptEngineManager();
ScriptEngine engine = manager.getEngineByName("js");
Object result = engine.eval("4*5");
There may be a better way, but this one works.
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keep rsync from removing unfinished source files
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It seems to me the problem is transferring a file before it's complete, not that you're deleting it.
If this is Linux, it's possible for a file to be open by process A and process B can unlink the file. There's no error, bu...
Why does Python pep-8 strongly recommend spaces over tabs for indentation?
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The answer was given right there in the PEP [ed: this passage has been edited out in 2013]. I quote:
The most popular way of indenting Python is with spaces only.
What other underlying reason do you need?
To put it less bluntly: Consider also the scope of the PEP as stated in the very first...
How to round up the result of integer division?
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For languages with a proper Euclidian-division operator such as Python, an even simpler approach would be pageCount = -((-records) // recordsPerPage).
– supercat
Jul 4 '18 at 16:45
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Check if a value is an object in JavaScript
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Original answer:
Try using typeof(var) and/or var instanceof something.
EDIT: This answer gives an idea of how to examine variable's properties, but it is not a bulletproof recipe (after all there's no recipe at all!) for checking whether it's an object, far from it. Since people tend to look for s...
SQL Server - stop or break execution of a SQL script
...diately stop execution of a SQL script in SQL server, like a "break" or "exit" command?
20 Answers
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Aborting a stash pop in Git
...nlike the question that is listed as a duplicate, I already had some uncommitted changes in the directory which I wanted to keep. I don't just want to make the merge conflict disappear, but also to get my directory back to the state it was before the pop.
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How to remove focus border (outline) around text/input boxes? (Chrome) [duplicate]
...emove the orange or blue border (outline) around text/input boxes? I think it only happens on Chrome to show that the input box is active. Here's the input CSS I'm using:
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Step-by-step debugging with IPython
...is makes debugging individual functions easy, as you can just load a file with %load and then run a function. You could force an error with an assert at the right position.
%pdb is a line magic. Call it as %pdb on, %pdb 1, %pdb off or %pdb 0. If called without argument it works as a toggle.
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Python read-only property
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Generally, Python programs should be written with the assumption that all users are consenting adults, and thus are responsible for using things correctly themselves. However, in the rare instance where it just does not make sense for an attribute to be settable ...