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How to check file MIME type with javascript before upload?
...that the real validation still has to be done on server side. I want to perform a client side checking to avoid unnecessary wastage of server resource.
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Mongodb Explain for Aggregation framework
...ns
As at MongoDB 3.4, the Aggregation Framework explain option provides information on how a pipeline is processed but does not support the same level of detail as the executionStats mode for a find() query. If you are focused on optimizing initial query execution you will likely find it beneficial...
Shell equality operators (=, ==, -eq)
...riting a #!/bin/bash script then I recommend using [[ instead. The doubled form has more features, more natural syntax, and fewer gotchas that will trip you up. Double quotes are no longer required around $a, for one:
$ [[ $a == foo ]]; echo "$?" # bash specific
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See also:
What's the diff...
How to style the option of an html “select” element?
...ays it "supports the latest, stable releases of all major browsers and platforms"
Demo: https://developer.snapappointments.com/bootstrap-select/examples/
.special {
font-weight: bold !important;
color: #fff !important;
background: #bc0000 !important;
text-transform: uppercase;
}
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How to Set focus to first text input in a bootstrap modal after shown
...nt data-targets, rename your modals IDs to match and update the IDs of the form input fields, and finally update your JS to match these new IDs:
see http://jsfiddle.net/panchroma/owtqhpzr/5/
HTML
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<button ... data-target="#myModal1"> ... </button>
...
<!-- Modal 1 -->
&l...
How to change an input button image using CSS?
...ou'll need to place an image and have an onclick function that submits the form.
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Working Soap client example
...rom SoapUI, Online SoapClient Calculator
Generate the SoapMessage object form the input SoapEnvelopeXML and SoapDataXml.
SoapEnvelopeXML
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
<soapenv:Header/>
<soapenv:Body>
<tem:Add xmlns:t...
How to access command line arguments of the caller inside a function?
...unction print() { is an amalgam between two different function declaration forms -- function print {, which is legacy ksh syntax that bash supports for backwards compatibility with pre-POSIX (which is to say, pre-1991) ksh, and print() {, which is POSIX-standardized. Consider using one or the other ...
C# namespace alias - what's the point?
...pace alias; it is useful to disambiguate - for example, against:
using WinformTimer = System.Windows.Forms.Timer;
using ThreadingTimer = System.Threading.Timer;
(ps: thanks for the choice of Timer ;-p)
Otherwise, if you use both System.Windows.Forms.Timer and System.Timers.Timer in the same file...
Django: Get model from string?
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Most model "strings" appear as the form "appname.modelname" so you might want to use this variation on get_model
from django.db.models.loading import get_model
your_model = get_model ( *your_string.split('.',1) )
The part of the django code that usually tu...