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Equivalent of varchar(max) in MySQL?
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However, note that the limit is lower if you use a multi-byte character set:
VARCHAR(21844) CHARACTER SET utf8
Here are some examples:
The maximum row size is 65535, but a varchar also includes a byte or two to encode the length of a given string. So you actually can't declare a varchar of ...
Set value of hidden field in a form using jQuery's “.val()” doesn't work
I've been trying to set the value of a hidden field in a form using jQuery, but without success.
16 Answers
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Android: How to turn screen on and off programmatically?
...LayoutParams.FLAG_KEEP_SCREEN_ON;
params.screenBrightness = 0;
getWindow().setAttributes(params);
Does not turn the screen off in the traditional sense. It makes the screen as dim as possible. In the standard platform there is a limit to how dim it can be; if your device is actually allowing the...
Can I simultaneously declare and assign a variable in VBA?
...ers/comments): Works with objects too (Excel 2010):
Dim ws As Worksheet: Set ws = ActiveWorkbook.Worksheets("Sheet1")
Dim ws2 As New Worksheet: ws2.Name = "test"
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TortoiseGit save user authentication / credentials
... password the next time you sync.
To use: Right click → TortoiseGit → Settings → Git → Credential. Select Credential helper: wincred - this repository only / wincred - current Windows user
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Node.js + Express: Routes vs controller
...it doesn't push any opinions on you. Thus, you are free (and required!) to set up any such opinions (patterns) on your own.
In the case of Express, you can definitely use an MVC pattern, and a route handler can certainly serve the role of a controller if you so desire--but you have to set it up tha...
What are the security risks of setting Access-Control-Allow-Origin?
I recently had to set Access-Control-Allow-Origin to * in order to be able to make cross-subdomain ajax calls.
Now I can't help but feel that I'm putting my environment to security risks.
Please help me if I'm doing it wrong.
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C++中智能指针的设计和使用 - C/C++ - 清泛网 - 专注C/C++及内核技术
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{
return val;
}
// 修改数据成员
void set_ptr(int *p) const
{
ptr->ip = p;
}
void set_int(int i)
{
val = i;
}
// 返回或修改基础int对象
int get_ptr_val() const
{
return *ptr->ip;
}
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Writing a pandas DataFrame to CSV file
...index (IOW, the df.index is the default RangeIndex), then you will want to set index=False when writing. To explain this in a different way, if your data DOES have an index, you can (and should) use index=True or just leave it out completely (as the default is True).
It would be wise to set this par...
Change Volley timeout duration
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See Request.setRetryPolicy() and the constructor for DefaultRetryPolicy, e.g.
JsonObjectRequest myRequest = new JsonObjectRequest(Method.GET,
url, null,
new Response.Listener<JSONObject>() {
@Override
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