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How to check file MIME type with javascript before upload?
...adAsDataURL(blob);
}
// Add more from http://en.wikipedia.org/wiki/List_of_file_signatures
function mimeType(headerString) {
switch (headerString) {
case "89504e47":
type = "image/png";
break;
case "47494638":
type = "image/gif";
break;
case "ffd8ff...
How to fix SSL certificate error when running Npm on Windows?
...ting certs
Set this environment variable to extend pre-defined certs:
NODE_EXTRA_CA_CERTS to "<path to certificate file>"
Full story
I've had to work with npm, pip, maven etc. behind a corporate firewall under Windows - it's not fun. I'll try and keep this platform agnostic/aware where poss...
Copy file remotely with PowerShell
...
@klm_ Can you please explain what you mean?
– FastTrack
Dec 8 '16 at 15:46
add a comment
...
Rails formatting date
...
Use
Model.created_at.strftime("%FT%T")
where,
%F - The ISO 8601 date format (%Y-%m-%d)
%T - 24-hour time (%H:%M:%S)
Following are some of the frequently used useful list of Date and Time formats that you could specify in strftime metho...
C++11 range based loop: get item by value or reference to const
...se, but in the way it is written):
long long SafePop(std::vector<uint32_t>& v)
{
auto const& cv = v;
long long n = -1;
if (!cv.empty())
{
n = cv.back();
v.pop_back();
}
return n;
}
Here, the author has created a const reference to v to use for...
Catching java.lang.OutOfMemoryError?
...
In OpenJdk1.7.0_40, I don't get any error or exception when I run this code. Even I changed the MEGABYTE to GIGABYTE (1024*1024*1024). Is that because of optimizer removes the variable 'byte[] bytes' as it is not used in the rest of the cod...
How to pass a class type as a function parameter
...lass: AnyClass = type(of: self)
Swift 2.x
let myClass: AnyClass = object_getClass(self)
and you can pass it as paramater later, if you'd like.
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What are some methods to debug Javascript inside of a UIWebView?
...use it like this: [NSClassFromString(@"WebView") performSelector:@selector(_enableRemoteInspector)]; Remember to remove the call when you build for release!
– rpitting
Apr 3 '12 at 13:58
...
android.widget.Switch - on/off event listener?
...o add a Switch to your layout via XML:
<Switch
android:id="@+id/on_off_switch"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textOff="OFF"
android:textOn="ON"/>
Then in your Activity's onCreate method, get a reference to your Switc...
What should I do if the current ASP.NET session is null?
...s doing initialization logic during startup, for example on the Application_Start event or by using a static constructor, Session state might not be available. It all boils down to whether there is a current request and AcquireRequestState has been run.
Also, should the client have disabled cookies,...