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Is there a point to minifying PHP?
...o improve performance... after performing benchmarking and profiling and establishing that caching itself will be the best possible performance gain.
– Charles
Nov 2 '10 at 16:58
1...
There is no ViewData item of type 'IEnumerable' that has the key 'xxx'
...e is the source SelectList.
What happened with my error was:
Because the table containing the drop down lists was in a partial view and the ViewData had been changed and no longer contained the SelectList I had referenced, the HtmlHelper (instead of throwing an error) tried to find the SelectList...
ActiveRecord.find(array_of_ids), preserving order
...
for me chaining don't work. Here tables name should be added before id:text like this: ["position((',' || somethings.id::text || ',') in ?)", ids.join(',') + ','] full version that worked for me: scope :for_ids_with_order, ->(ids) { order = sanitize_...
Linux反编译全攻略 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...s:
Idx Name Size VMA LMA File off Algn
SYMBOL TABLE:
no symbols
我们可以看到start address是0x08048080，但有一个问题是Sections下面却什么都没有。这不是一个正常的程序？
接下来，使用十六进制工具 hexedit 查...
How to delete all datastore in Google App Engine?
...n appengine) then datastore --> dataviewer, select all the rows for the table you want to delete and hit the delete button (you'll have to do this for all your tables).
You can do the same programmatically through the remote_api (but I never used it).
If you're talking about the development dat...
Storing sex (gender) in database
...the 'closest' data type would be tinyint with a CHECK constraint or lookup table as appropriate.
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Creating a copy of a database in PostgreSQL [closed]
...rday it worked, now random unique constrain are violated. Note: I drop all table to receiver db.
– gunzapper
Apr 1 '16 at 10:45
1
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JPA eager fetch does not join
...nd JOIN are two extremes and SUBSELECT falls in between. One can choose suitable strategy based on her/his domain model.
By default SELECT is used by both JPA/EclipseLink and Hibernate. This can be overridden by using:
@Fetch(FetchMode.JOIN)
@Fetch(FetchMode.SUBSELECT)
in Hibernate. It also all...
How do I read CSV data into a record array in NumPy?
...contents of a CSV file into a record array, much in the way that R's read.table() , read.delim() , and read.csv() family imports data to R's data frame?
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SQLite with encryption/password protection
...here is also litereplica. It uses the ChaCha cipher, faster than AES on portable devices based on ARMv7
– Bernardo Ramos
Jan 6 '17 at 19:28
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