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Laravel Schema onDelete set null
... to
http://dev.mysql.com/doc/refman/5.6/en/innodb-foreign-key-constraints.html
$table->onDelete('set null') should work prehaps try
$table->...->onDelete(DB::raw('set null'));
If there are any errors, would also be helpful
...
When to catch java.lang.Error?
...tions, but never Errors.
http://pmd.sourceforge.net/rules/strictexception.html
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Where can I get a “useful” C++ binary search algorithm?
...
There is a set of them:
http://www.sgi.com/tech/stl/table_of_contents.html
Search for:
lower_bound
upper_bound
equal_range
binary_search
On a separate note:
They were probably thinking that searching containers could term up more than one result. But on the odd occasion where you just nee...
Eclipse shortcut “go to line + column”
...ou want more short-cuts, refer http://www.shortcutworld.com/en/win/Eclipse.html
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How to make an AJAX call without jQuery?
...http.status == 200) {
document.getElementById("myDiv").innerHTML = xmlhttp.responseText;
}
else if (xmlhttp.status == 400) {
alert('There was an error 400');
}
else {
alert('something else other than 200 was retu...
BLE（二）信道&数据包&协议栈格式 - 创客硬件开发 - 清泛IT社区，...
文章源自：https://www.gandalf.site/2018/11/ble_23.html
参考低功耗蓝牙（BLE）安全初探
0x1 信道BLE的物理通道即“频道，分别是‘f=2402+k*2 MHz, k=0, … ,39’，带宽为2MHz”的40个RF Channel。
其中，有3个信道是advertising channel（广播通道）...
How to test if a string is basically an integer in quotes using Ruby
... not a valid octal number. osdir.com/ml/lang.ruby.general/2002-08/msg00247.html
– Andrew Grimm
Aug 5 '09 at 23:25
20
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Git Push Error: insufficient permission for adding an object to repository database
...tgid bit on all of the directories. See gnu.org/software/coreutils/manual/html_node/…
– Richard Hansen
May 11 '17 at 21:02
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ASP.NET MVC Razor Concatenation
I'm trying the render an HTML list that looks like the following, using the Razor view engine:
6 Answers
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Postgresql - change the size of a varchar column to lower length
...lues.
(http://www.postgresql.org/docs/9.0/interactive/datatype-character.html)
The size specification in VARCHAR is only used to check the size of the values which are inserted, it does not affect the disk layout. In fact, VARCHAR and TEXT fields are stored in the same way in Postgres.
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