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Does the 'mutable' keyword have any purpose other than allowing the variable to be modified by a con
...Since c++11 mutable can be used on a lambda to denote that things captured by value are modifiable (they aren't by default):
int x = 0;
auto f1 = [=]() mutable {x = 42;}; // OK
auto f2 = [=]() {x = 42;}; // Error: a by-value capture cannot be modified in a non-mutable lambda
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In tmux can I resize a pane to an absolute value
... easier to digest - i.e. :resize-pane -D 10 (Resizes the current pane down by 10 cells). Change D to L, R, U as explained above.
– jordancooperman
Feb 4 '18 at 16:26
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std::shared_ptr of this
...Note however, that calling .shared_from_this() requires that this is owned by std::shared_ptr at the point of call. This means that you cannot create such object on stack anymore, and generally cannot call .shared_from_this() from within a constructor or destructor.
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Dynamically change color to lighter or darker by percentage CSS (Javascript)
...e some other links, but with lighter color. Obviously I can just do simply by the hex code adding in the CSS file, but our site lets user decide what colors they want for their customized profile/site (like Twitter).
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MongoDB: Find a document by non-existence of a field?
... imageUploader: {
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How can I apply a function to every row/column of a matrix in MATLAB?
You can apply a function to every item in a vector by saying, for example, v + 1 , or you can use the function arrayfun . How can I do it for every row/column of a matrix without using a for loop?
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How to name factory like methods?
...version methods.
of — A concise alternative to valueOf, popularized by EnumSet (Item 32).
getInstance — Returns an instance that is described by the parameters
but cannot be said to have the same value. In the case of a singleton,
getInstance takes no parameters and returns the sol...
mongodb find by multiple array items
... imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454...
JavaScript get element by name
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The reason you're seeing that error is because document.getElementsByName returns a NodeList of elements. And a NodeList of elements does not have a .value property.
Use this instead:
document.getElementsByName("acc")[0].value
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How to select a radio button by default? [duplicate]
I have some radio buttons and I want one of them to be set as selected by default when the page is loaded. How can I do that?
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