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[ :Unexpected operator in shell programming [duplicate]
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POSIX sh doesn't understand == for string equality, as that is a bash-ism. Use = instead.
The other people saying that brackets aren't supported by sh are wrong, btw.
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Dynamic type languages versus static type languages
...t be proven by the compiler. A simple example being if(1) a = 3; else a = "string";, surely since it's always true, the else-branch will never be executed in the program, and no type error shall occur. But it can't prove these cases in a general way, so it's rejected. This is the major weakness of a...
jQuery - replace all instances of a character in a string [duplicate]
...on, so that you can specify the global (g) flag:
var s = 'some+multi+word+string'.replace(/\+/g, ' ');
(I removed the $() around the string, as replace is not a jQuery method, so that won't work at all.)
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pip install from git repo branch
...ango 1.9 on, Django ships with a file that has a unicode filename. The zip extractor used by pip chokes on that. An easy workaround is to replace .zip with .tar.gz, as the tar extractor works.
– spectras
Jul 3 '16 at 11:56
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Any reason not to use '+' to concatenate two strings?
A common antipattern in Python is to concatenate a sequence of strings using + in a loop. This is bad because the Python interpreter has to create a new string object for each iteration, and it ends up taking quadratic time. (Recent versions of CPython can apparently optimize this in some cases, b...
How do I decode a string with escaped unicode?
... this is called so I'm having trouble searching for it. How can I decode a string with unicode from http\u00253A\u00252F\u00252Fexample.com to http://example.com with JavaScript? I tried unescape , decodeURI , and decodeURIComponent so I guess the only thing left is string replace.
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Psql list all tables
...ate as "Collate",
d.datctype as "Ctype",
pg_catalog.array_to_string(d.datacl, E'\n') AS "Access privileges"
FROM pg_catalog.pg_database d
ORDER BY 1;
**************************
so you can see that psql is searching pg_catalog.pg_database when it gets a list of databases. Similarly, f...
SQL Switch/Case in 'where' clause
... @selectedValue varchar (50)
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
SELECT
drugstock_drugname.n_cur_bal,drugname.cdrugname,clinic.cclinicname
FROM drugstock_drugname
INNER JOIN drugname ON drugstock_drugname.dr...
Is the pImpl idiom really used in practice?
...ss, I would consider caution because all those benefits come at a cost: an extra level of indirection is required in order to access the implementation methods.
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How do I get a Date without time in Java?
...is asking about how to get a Date object - that answer formats a date to a string, which isn't the same thing. Fundamentally, asking what date a Date is on is a meaningless question without more information: the time zone and the calendar system you're using.
– Jon Skeet
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