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How do I remove an item from a stl vector with a certain value?
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Does this all-in-one-statement form depend on the order in which the compiler evaluates the arguments, or is vec.end() guaranteed to be the same on either side of the call to std::remove? It looks to me in reading other parts of the web like this is safe, but it should be st...
List vs tuple, when to use each? [duplicate]
... You would want to change the values (go with list), but at the same time order and position is meaningful and consistent (go with tuple?).
– Arlen
Aug 23 '11 at 15:13
52
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Limiting the number of records from mysqldump?
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As the default order is ASC which is rarely what you want in this situation, you need to have a proper database design to make DESC work out of the box. If all your tables have ONE primary key column with the same name (natural or surrogate...
Hamcrest compare collections
...uals(expectedList, actual.getList());
If you really intend to perform an order-insensitive comparison, you can call the containsInAnyOrder varargs method and provide values directly:
assertThat(actual.getList(), containsInAnyOrder("item1", "item2"));
(Assuming that your list is of String, rathe...
Optimal way to concatenate/aggregate strings
...LECT
ID,
Name,
ROW_NUMBER() OVER (PARTITION BY ID ORDER BY Name) AS NameNumber,
COUNT(*) OVER (PARTITION BY ID) AS NameCount
FROM dbo.SourceTable
),
Concatenated AS
(
SELECT
ID,
CAST(Name AS nvarchar) AS FullName,
Name,
Nam...
Reorder / reset auto increment primary key
...mary key column and re-create it. All the ids should then be reassigned in order.
However this is probably a bad idea in most situations. If you have other tables that have foreign keys to this table then it will definitely not work.
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How to evaluate a math expression given in string form?
...described wiki.The logic of this algoritm starting from rules of operation orders. 1. operator sign | variable evaluation | function call | parenthesis (sub-expressions); 2. exponentiation; 3. multiplication, division; 4. addition, subtraction;
– Vasile Bors
J...
What are the Dangers of Method Swizzling in Objective-C?
...ode
Possible naming conflicts
Swizzling changes the method's arguments
The order of swizzles matters
Difficult to understand (looks recursive)
Difficult to debug
These points are all valid, and in addressing them we can improve both our understanding of method swizzling as well as the methodology ...
Using parameters in batch files at Windows command line
...process parameters without requiring that they are presented in a specific order. For example, a script may recognize the flags -a and -b in any order. A good way to parse the command line in such cases is
:parse
IF "%~1"=="" GOTO endparse
IF "%~1"=="-a" REM do something
IF "%~1"=="-b" REM do somet...
In which scenario do I use a particular STL container?
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You now have unordered_map and unordered_set (and their multi variants) which are not in the flow chart but are good picks when you don't care about order but need to find elements by key. Their lookup is usually O(1) instead of O(log n).
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