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What is the best way to do a substring in a batch file?
...ing the :~start,length notation:
%var:~10,5%
will extract 5 characters from position 10 in the environment variable %var%.
NOTE: The index of the strings is zero based, so the first character is at position 0, the second at 1, etc.
To get substrings of argument variables such as %0, %1, etc. y...
How to create ASP.NET Web API Url?
... @YuriyFaktorovich This post implies that Url.Action is being used from a View. Url is of type System.Web.Mvc.UrlHelper, and it doesn't map to WebApi routes. This is why you need the extra parameter: new { httproute = "" }.
– Jesse
Sep 24 '13 at 21:26
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Adding parameter to ng-click function inside ng-repeat doesn't seem to work
...o change the method to expect to get a task object and get the id property from that object.
– Jim Reineri
Jan 25 '16 at 22:59
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Cannot change column used in a foreign key constraint
.... This means your foreign key disallows changing the type of your field."
From MySQL 5.5 Reference Manual: FOREIGN KEY Constraints
Corresponding columns in the foreign key and the referenced key must
have similar internal data types inside InnoDB so that they can be
compared without a type ...
What is a memory fence?
... in device drivers than application code.
The CPU reordering is different from compiler optimisations - although the artefacts can be similar. You need to take separate measures to stop the compiler reordering your instructions if that may cause undesirable behaviour (e.g. use of the volatile keywo...
How to use double or single brackets, parentheses, curly braces
...mp;1; date; } | tee logfile
# now we can calculate the duration of a build from the logfile
There is a subtle syntactic difference with ( ), though (see bash reference) ; essentially, a semicolon ; after the last command within braces is a must, and the braces {, } must be surrounded by spaces.
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Which Boost features overlap with C++11?
...ed → <unordered_set>, <unordered_map>
Features back-ported from C++11:
Atomic ← std::atomic
Chrono ← <chrono> (see below)
Move ← Rvalue references
Replaceable by C++17 language features:
String_ref → std::string_view
Filesystem → <filesystem> (Filesystem ...
How update the _id of one MongoDB Document?
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Would a snapshot() on find be advised to keep the forEach from accidentally picking up newer docs as it iterates?
– John Flinchbaugh
May 14 '14 at 21:04
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Understand the “Decorator Pattern” with a real world example
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From another perspective this is not even close to "real world". In the real world you should not recompile each time you need to add a new topping in menu (or change the price). Toppings are (usually) stored in database and ...
How to track down log4net problems
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I changed from C:\tmp\log4net.txt to C:\log4net.txt, then it can generate text file.
– Frank Myat Thu
Jun 29 '17 at 7:15
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