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Does free(ptr) where ptr is NULL corrupt memory?
... ptr to be deallocated, that is, made
available for further allocation. If ptr is a null pointer, no action occurs.
See ISO-IEC 9899.
That being said, when looking at different codebases in the wild, you'll notice people sometimes do:
if (ptr)
free(ptr);
This is because some C runtimes (I...
In C, do braces act as a stack frame?
If I create a variable within a new set of curly braces, is that variable popped off the stack on the closing brace, or does it hang out until the end of the function? For example:
...
php check if array contains all array values from another array
I would like to find out if $all contains all $search_this values and return true or false. any idea please?
5 Answers
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Convert a date format in PHP
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What if I get this date 0000-00-00 from mySQL? it returns a wrong date like 31/12/1969 ...
– Enrique
Apr 29 '10 at 22:20
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Entity Framework Refresh context?
...entities in your context is to dispose your context and create a new one.
If you really need to refresh some entity and you are using Code First approach with DbContext class, you can use
public static void ReloadEntity<TEntity>(
this DbContext context,
TEntity entity)
...
Is gcc std::unordered_map implementation slow? If so - why?
...m to be pointing to "fixes" to max_load_factor handling, which led to the difference in performance.
– jxh
Jul 24 '12 at 18:21
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No ConcurrentList in .Net 4.0?
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And if you need something similar to List<T> that uses old-skool, monitor-based synchronisation, there's SynchronizedCollection<T> hidden away in the BCL: msdn.microsoft.com/en-us/library/ms668265.aspx
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Import CSV to SQLite
...v foo
The first command creates the column names for the table. However, if you want the column names inherited from the csv file, you might just ignore the first line.
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Git log to get commits only for a specific branch
I want to list all commits that are only part of a specific branch.
11 Answers
11
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Assign output of a program to a variable using a MS batch file
...ens=*" %%i in ('"tasklist | grep explorer"') do set VAR=%%i. Easier for me if there're no quotes in the command itself.
– Paul
Apr 22 at 23:31
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