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What is the preferred Bash shebang?
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l0b0l0b0
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Understanding the Rails Authenticity Token
... authenticity_token by default. The name
and value of this token must be added to every layout that renders
forms by including csrf_meta_tags in the HTML head.
Notes
Keep in mind, Rails only verifies not idempotent methods (POST, PUT/PATCH and DELETE). GET request are not checked for authenti...
Is multiplication and division using shift operators in C actually faster?
...elf has implemented the multiply instruction as a sequence of shifts & adds in microcode.
Bottom line--don't spend a lot of time worrying about this. If you mean to shift, shift. If you mean to multiply, multiply. Do what is semantically clearest--your coworkers will thank you later. Or, mo...
PostgreSQL LIKE query performance variations
...h from GIN indexed TSVECTOR column
Trigram indexes for LIKE
Install the additional module pg_trgm which provides operator classes for GIN and GiST trigram indexes to support all LIKE and ILIKE patterns, not just left-anchored ones:
Example index:
CREATE INDEX tbl_col_gin_trgm_idx ON tbl USING ...
How to print a string in fixed width?
...en will be a string
the 5 (or whatever number you wish) informs python to pad the string with spaces up to 5 characters.
In your specific case a possible implementation could look like:
>>> dict_ = {'a': 1, 'ab': 1, 'abc': 1}
>>> for item in dict_.items():
... print 'value %...
How to read multiple text files into a single RDD?
I want to read a bunch of text files from a hdfs location and perform mapping on it in an iteration using spark.
10 Answers...
Eclipse - java.lang.ClassNotFoundException
...figuration will allow you to execute unit tests in eclipse.
Just one more advice, if your web project's tests require some configuration files that are under the resources, be sure to include that folder as a source folder and to make the proper build-path configuration.
Hope it helps.
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How can I add reflection to a C++ application?
...lection. I realise C++ supplies some limited information using RTTI. Which additional libraries (or other techniques) could supply this information?
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What is the difference between Scope_Identity(), Identity(), @@Identity, and Ident_Current()?
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GuffaGuffa
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how to create a Java Date object of midnight today and midnight tomorrow?
...(Calendar.SECOND, 0);
date.set(Calendar.MILLISECOND, 0);
// next day
date.add(Calendar.DAY_OF_MONTH, 1);
JDK 8 - java.time.LocalTime and java.time.LocalDate
LocalTime midnight = LocalTime.MIDNIGHT;
LocalDate today = LocalDate.now(ZoneId.of("Europe/Berlin"));
LocalDateTime todayMidnight = Local...