大约有 40,000 项符合查询结果（耗时：0.0660秒） [XML]
Limiting the number of records from mysqldump?
I am trying to load a small sample of records from a large database into a test database.
4 Answers
...
Should I check in node_modules to git when creating a node.js app on Heroku?
... They are no longer recommending the node_modules folder be committed.
Usually, no. Allow npm to resolve dependencies for your packages.
For packages you deploy, such as websites and apps, you should use npm
shrinkwrap to lock down your full dependency tree:
https://docs.npmjs.com/cli/shrinkwrap
...
git: Switch branch and ignore any changes without committing
...ou need a clean state to change branches. The branch checkout will only be allowed if it does not affect the 'dirty files' (as Charles Bailey remarks in the comments).
Otherwise, you should either:
stash your current change or
reset --hard HEAD (if you do not mind losing those minor changes) or
...
How do I set up NSZombieEnabled in Xcode 4?
...d again. This is a debugging aid that increases memory use (no object is really released) but improves error reporting.
A typical case is when you over-release an object and you don't know which one:
With zombies: -[UITableView release]: message sent to deallocated instance
Without zombies:
...
?? Coalesce for empty string?
...d make your extension method return a string or null, however, which would allow the coalescing operator to work. This would be odd, however, and I personally prefer your current approach.
Since you're already using an extension method, why not just make one that returns the value or a default:
s...
What is the significance of load factor in HashMap?
...ble is created. The load factor is a measure of how full the hash table is allowed to get before its capacity is automatically increased. When the number of entries in the hash table exceeds the product of the load factor and the current capacity, the hash table is rehashed (that is, internal data s...
Python csv string to array
...hat it doesn't take into account of "string escaping," i.e. 3, "4,5,6, 6 shall be treated as three fields instead of five.
– Zz'Rot
Feb 9 '16 at 4:16
...
How to include a child object's child object in Entity Framework 5
...tity you can use an overload of the Include() method which takes a lambda expression instead of a string. You can then Select() over children with Linq expressions rather than string paths.
return DatabaseContext.Applications
.Include(a => a.Children.Select(c => c.ChildRelationshipType))...
How to remove unused C/C++ symbols with GCC and ld?
...scard unreferenced sections):
-Wl,--gc-sections
So if you had one file called test.cpp that had two functions declared in it, but one of them was unused, you could omit the unused one with the following command to gcc(g++):
gcc -Os -fdata-sections -ffunction-sections test.cpp -o test -Wl,--gc-se...
Performance optimization strategies of last resort [closed]
...erformance questions on this site already, but it occurs to me that almost all are very problem-specific and fairly narrow. And almost all repeat the advice to avoid premature optimization.
...