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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 ...
How to exit if a command failed?
I am a noob in shell-scripting. I want to print a message and exit my script if a command fails. I've tried:
8 Answers
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SQL how to make null values come last when sorting ascending
...e with a datetime field. The field in question can be null. I have a query and I want the results sorted ascendingly by the datetime field, however I want rows where the datetime field is null at the end of the list, not at the beginning.
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How to validate a url in Python? (Malformed or not)
I have url from the user and I have to reply with the fetched HTML.
10 Answers
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Authentication versus Authorization
...ontext of web applications? I see the abbreviation "auth" a lot. Does it stand for auth -entication or auth -orization? Or is it both?
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Is either GET or POST more secure than the other?
...nformation as a GET in the actual network communication between the client and server. If you need to pass information that is sensitive, your first line of defense would be to pass it using Secure HTTP.
GET or query string posts are really good for information required for either bookmarking a p...
Passing argument to alias in bash [duplicate]
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An alias will expand to the string it represents. Anything after the alias will appear after its expansion without needing to be or able to be passed as explicit arguments (e.g. $1).
$ alias foo='/path/to/bar'
$ foo some args
will get expa...
Most efficient way to convert an HTMLCollection to an Array
... to an Array, other than iterating through the contents of said collection and manually pushing each item into an array?
7 ...
Highlight text similar to grep, but don't filter out text [duplicate]
...ll perl regular expressions.
$ ack --passthru 'pattern1' file_name
$ command_here | ack --passthru 'pattern1'
You can also do it using grep like this:
$ grep --color -E '^|pattern1|pattern2' file_name
$ command_here | grep --color -E '^|pattern1|pattern2'
This will match all lines and highli...
Hide Twitter Bootstrap nav collapse on click
... FYI, this doesn't work in all cases. If the window is re sized and it brings up the mobile menu it will be open by default.
– Andrew Boes
Sep 13 '13 at 19:59
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