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What do the makefile symbols $@ and $< mean?
...e name of the target being generated, and $< the first prerequisite (usually a source file). You can find a list of all these special variables in the GNU Make manual.
For example, consider the following declaration:
all: library.cpp main.cpp
In this case:
$@ evaluates to all
$< evaluates to...
Best Practice: Access form elements by HTML id or name attribute?
...submits it via AJAX (and you don't care about doing a regular submit as a fallback in case AJAX fails somehow), ...then you've made a mistake.
– Doin
Aug 18 '16 at 18:32
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Regex match everything after question mark?
...sted in.
If the string can contain new lines you may have to use the "dot all" modifier to allow the dot to match the new line character. Whether or not you have to do this, and how to do this, depends on the language you are using. It appears that you forgot to mention the programming language you...
Getting exact error type in from DbValidationException
...ity.Validation.DbEntityValidationResult} which gives me no information at all about what field it was unable to initialize.
Is there a way to get more info about this error?
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How to call function from another file in go language?
I want to call function from another file in go lang, can any one help?
4 Answers
4
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Subset of rows containing NA (missing) values in a chosen column of a data frame
...ated. THe point is to use is.na, I wrongly interpreted you wanted to check all variables.
– Joris Meys
Nov 2 '11 at 21:34
3
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Data Modeling with Kafka? Topics and Partitions
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When structuring your data for Kafka it really depends on how it´s meant to be consumed.
In my mind, a topic is a grouping of messages of a similar type that will be consumed by the same type of consumer so in the example above, I would just have a single topic and...
Where is Python's sys.path initialized from?
...
"Initialized from the environment variable PYTHONPATH, plus an installation-dependent default"
-- http://docs.python.org/library/sys.html#sys.path
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JUnit 4 Test Suites
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You can create a suite like so. For example an AllTest suite would look something like this.
package my.package.tests;
@RunWith(Suite.class)
@SuiteClasses({
testMyService.class,
testMyBackend.class,
...
})
public class AllTests {}
Now you can run this in ...
How to pass macro definition from “make” command line arguments (-D) to C source code?
I usually pass macro definitions from "make command line" to a "makefile" using the option :
-Dname=value. The definition is accessible inside the makefile.
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