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创建增量同步Oracle物化视图问题 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...库C上新建这个物化视图却失败，说：“ORA-12014: 表 'T_MV_TEST' 不包含主键约束条件”。如果将此表的主键增加字段并ENABLE后操作，又说：“ORA-23412: 主表的主键列已更改”。
但有一个奇怪的现象：在数据库B上我们也建立过物化视...
Get specific object by id from array of objects in AngularJS
...ns the value of the first element in the array that satisfies the provided testing function.
– abosancic
Jul 20 '17 at 13:12
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What is the C# equivalent of NaN or IsNumeric?
What is the most efficient way of testing an input string whether it contains a numeric value (or conversely Not A Number)? I guess I can use Double.Parse or a regex (see below) but I was wondering if there is some built in way to do this, such as javascript's NaN() or IsNumeric() (was that VB...
Get list of data-* attributes using javascript / jQuery
...ult:
var a = [].filter.call(el.attributes, function(at) { return /^data-/.test(at.name); });
This gives an array of attribute objects, which have name and value properties:
if (a.length) {
var firstAttributeName = a[0].name;
var firstAttributeValue = a[0].value;
}
Edit: To take it a st...
How to scp in Python?
...re is an example of the scp.get() command: scp.get(r'/nfs_home/appers/xxxx/test2.txt', r'C:\Users\xxxx\Desktop\MR_Test')
– Chris Nielsen
Jan 14 '16 at 15:49
...
Convert string in base64 to image and save on filesystem in Python
... @Oleg Tarasenko, I had a typo in the second method. I fiexed it and tested it on your string and it works.
– John La Rooy
Feb 25 '10 at 21:13
...
Batch equivalent of Bash backticks
...scripts with the for /f command:
for /f "usebackq tokens=*" %%a in (`echo Test`) do my_command %%a
Yeah, it's kinda non-obvious (to say the least), but it's what's there.
See for /? for the gory details.
Sidenote: I thought that to use "echo" inside the backticks in a "for /f" command would nee...
Replace all non Alpha Numeric characters, New Lines, and multiple White Space with one Space
...
Check it and test it, have not much experience in js-regex yet :p Happy you like it
– Jonny 5
Jan 1 '14 at 2:09
6
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Selecting a row in DataGridView programmatically
...
Not tested, but I think you can do the following:
dataGrid.Rows[index].Selected = true;
or you could do the following (but again: not tested):
dataGrid.SelectedRows.Clear();
foreach(DataGridViewRow row in dataGrid.Rows)
{
...
What is the difference between `new Object()` and object literal notation?
...
On my machine using Node.js, I ran the following:
console.log('Testing Array:');
console.time('using[]');
for(var i=0; i<200000000; i++){var arr = []};
console.timeEnd('using[]');
console.time('using new');
for(var i=0; i<200000000; i++){var arr = new Array};
console.timeEnd('usin...