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Javascript - removing undefined fields from an object [duplicate]
...}
const newObject = Object.keys(obj).reduce((acc, key) => {
const _acc = acc;
if (obj[key] !== undefined) _acc[key] = obj[key];
return _acc;
}, {})
console.log(newObject)
// Object {a: 1}
share
...
How to remove all namespaces from XML with C#?
... <insert>
<offer xmlns=""http://schema.peters.com/doc_353/1/Types"">0174587</offer>
<type2 xmlns=""http://schema.peters.com/doc_353/1/Types"">014717</type2>
<supplier xmlns=""http://schema.peters.com/doc_353/1/Types"">019172</suppli...
What is the difference between char * const and const char *?
... *const foo, *const bar;. C declarator syntax...
– gx_
Aug 28 '13 at 18:35
...
Turn off Visual Studio Attach security warning when debugging IIS
...hange (or create) the following registry key to 1:
Visual Studio 2008 HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\9.0\Debugger\DisableAttachSecurityWarning
Visual Studio 2010 HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\10.0\Debugger\DisableAttachSecurityWarning
Visual Studio 2012
HKEY...
Mongodb Explain for Aggregation framework
...erations
explain:true
db.collection.aggregate([
{ $project : { "Tags._id" : 1 }},
{ $unwind : "$Tags" },
{ $match: {$or: [{"Tags._id":"tag1"},{"Tags._id":"tag2"}]}},
{ $group: {
_id : "$_id",
count: { $sum:1 }
}},
{$sort: {"count":-1}}
],
{
explain...
How do I add a margin between bootstrap columns without wrapping [duplicate]
...
<div class="row info-panel">
<div class="col-md-4" id="server_1">
<div class="server-action-menu">
Server 1
</div>
</div>
</div>
CSS
.server-action-menu {
background-color: transparent;
background-image: linear-gradient(...
Is there an IDictionary implementation that, on missing key, returns the default value instead of th
...ctionary<TKey, TValue>
{
private IDictionary<TKey, TValue> _dict = new Dictionary<TKey, TValue>();
public TValue this[TKey key]
{
get
{
TValue val;
if (!TryGetValue(key, out val))
return default(TValue);
...
Remove IE10's “clear field” X button on certain inputs?
...
This control ONLY appears in IE10+ on Win8. The trick is that it still appears when the document is put in a compatibility mode.
– EricLaw
Sep 6 '13 at 15:45
...
How to compare UIColors?
...For an intro to blocks in iOS, see raywenderlich.com/9328/creating-a-diner-app-using-blocks-part-1
– JRG-Developer
Feb 10 '14 at 19:11
1
...
Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?
...
There is a helpful function for doing the first example I gave, numpy.ix_. You can do the same thing as my first example with x[numpy.ix_([0,2],[1,3])]. This can save you from having to enter in all of those extra brackets.
...