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Instance v state variables in react.js
...ld only be done by setState as suggested in a comment), React calls render and makes any necessary changes to the real DOM.
Because the value of timeout has no effect on the rendering of your component, it shouldn't live in state. Putting it there would cause unnecessary calls to render.
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How would I skip optional arguments in a function call?
...ify everything up until that last parameter. Generally if you want to mix-and-match, you give them default values of '' or null, and don't use them inside the function if they are that default value.
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MySQL - Using COUNT(*) in the WHERE clause
...he clause that They Don't Bother To Teach Properly on sql courses or books and knowing about it generally the sign that the coder has progressed beyond novice level.
– Cruachan
Nov 19 '08 at 12:59
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Android ViewPager with bottom dots
...ly viewpager with tablayout.
Your main Layout:
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v4.view.Vi...
Finding JavaScript memory leaks with Chrome
... created a very simple test case that creates a Backbone view, attaches a handler to an event, and instantiates a user-defined class. I believe that by clicking the "Remove" button in this sample, everything will be cleaned up and there should be no memory leaks.
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How to load up CSS files using Javascript?
...e into a javascript file, have the end-user simply include the javascript, and make sure the CSS path is absolute so it is loaded from your servers.
VanillaJS
Here is an example that uses plain JavaScript to inject a CSS link into the head element based on the filename portion of the URL:
<scr...
Use StringFormat to add a string to a WPF XAML binding
... you'd probably be better off using a converter so the order of the number and units isn't fixed. <Run Text="{x:Static s:UIStrings.General_FahrenheitAbbreviation}" />
– Matt Becker
Nov 10 '15 at 15:19
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How to configure Mac OS X term so that git has color? [closed]
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William Purcell's answer only enables color for the 'git diff' command. Do this to enable colors for all git commands:
$ git config --global color.ui true
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What does `:_*` (colon underscore star) do in Scala?
...Child - sequence
: - type ascription, a hint that helps compiler to understand, what type does that expression have
_* - placeholder accepting any value + vararg operator
child ++ newChild : _* expands Seq[Node] to Node* (tells the compiler that we're rather working with a varargs, than a sequence...
A proper wrapper for console.log with correct line number?
I'm now developing an application, and place a global isDebug switch. I would like to wrap console.log for more convenient usage.
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