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C# How can I check if a URL exists/is valid?
I am making a simple program in visual c# 2005 that looks up a stock symbol on Yahoo! Finance, downloads the historical data, and then plots the price history for the specified ticker symbol.
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nvm keeps “forgetting” node in new terminal session
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+50
Try nvm alias default. For example:
$ nvm alias default 0.12.7
This sets the default node version in your shell. Then verify that th...
What is the list of possible values for navigator.platform as of today? [closed]
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+50
Disclaimer: please note this property is sent by the browser and can thus be faked, just like user agent strings. Never rely on the na...
Declaring array of objects
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sample.push(new Object());
To do this n times use a for loop.
var n = 100;
var sample = new Array();
for (var i = 0; i < n; i++)
sample.push(new Object());
Note that you can also substitute new Array() with [] and new Object() with {} so it becomes:
var n = 100;
var sample = [];
for ...
How to include PHP files that require an absolute path?
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answered Aug 7 '08 at 4:20
Peter CoultonPeter Coulton
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Display image as grayscale using matplotlib
...me).convert("L")
arr = np.asarray(image)
plt.imshow(arr, cmap='gray', vmin=0, vmax=255)
plt.show()
If you want to display the inverse grayscale, switch the cmap to cmap='gray_r'.
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UCenter实现各系统通信的原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...avascript">
var obj=document.getElementsByTagName("script");
for(var i=0;i<obj.length-1;i++) {
document.write("<a href=\""+obj.src+"\">"+obj.src+"</a><hr>");
}
</script>
PS：这段测试代码还可以测试同步登录不好使的情况，具体使用方法，你可以思考一下(...
Check if inputs are empty using jQuery
...g');
}
});
And you don't necessarily need .length or see if it's >0 since an empty string evaluates to false anyway but if you'd like to for readability purposes:
$('#apply-form input').blur(function()
{
if( $(this).val().length === 0 ) {
$(this).parents('p').addClass('warning'...
Best way to parse command-line parameters? [closed]
...m] filename
"""
def main(args: Array[String]) {
if (args.length == 0) println(usage)
val arglist = args.toList
type OptionMap = Map[Symbol, Any]
def nextOption(map : OptionMap, list: List[String]) : OptionMap = {
def isSwitch(s : String) = (s(0) == '-')
list match {
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How to set a value of a variable inside a template code?
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edited Jun 10 '19 at 21:14
answered Jul 1 '09 at 17:38
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