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How to check null objects in jQuery
...em to have enough reputation to vote down the answer...)
Wolf wrote:
Calling length property on undefined
or a null object will cause IE and
webkit browsers to fail!
Instead try this:
// NOTE!! THE FOLLOWING IS WRONG; DO NOT USE! -- EleotleCram
if($("#something") !== null){
// do ...
Chrome sendrequest error: TypeError: Converting circular structure to JSON
... work for me.
– Nikola Schou
Nov 1 '16 at 12:11
1
@BrunoLM: for 30 iterations limit, if you retur...
java.sql.SQLException: Incorrect string value: '\xF0\x9F\x91\xBD\xF0\x9F…'
...ead:
For a supplementary character, utf8 cannot store the character at all,
while utf8mb4 requires four bytes to store it. Since utf8 cannot store
the character at all, you do not have any supplementary characters in
utf8 columns and you need not worry about converting characters or
losi...
How to convert an image to base64 encoding?
...
16
Just in case you are (for whatever reason) unable to use curl nor file_get_contents, you can wo...
The character encoding of the HTML document was not declared
...head:
<meta charset="UTF-8">
the character encoding (which is actually UTF-8) of the html document was not declared
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Read file data without saving it in Flask
...iting my first flask application. I am dealing with file uploads, and basically what I want is to read the data/content of the uploaded file without saving it and then print it on the resulting page. Yes, I am assuming that the user uploads a text file always.
...
How does the C# compiler detect COM types?
...peech API, where you're able to "instantiate" the interface SpVoice (but really, you're instantiating SPVoiceClass).
[CoClass(typeof(SpVoiceClass))]
public interface SpVoice : ISpeechVoice, _ISpeechVoiceEvents_Event { }
sh...
serve current directory from command line
...also running on a Mac. Tried it with Ruby 1.8.7, 1.9.3 and 2.0.0, and they all work. Weird.
– Daniel Perez Alvarez
Sep 9 '13 at 9:04
7
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Get underlined text with Markdown
...
I guess this is because underlined text is hard to read, and that it's usually used for hyperlinks.
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MongoDB仿关系型数据库Group聚合例子 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...rogram
{
private static string MongoConnStr = "mongodb://172.16.86.53:27017";
/// <summary>
/// MongoDB Group,max仿关系型数据库例子
/// 需求：锯齿状数据表，取所有用户最近一天的数据
///
///
static vo...