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Test if something is not undefined in JavaScript
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What if a variable exists and contains the string that reads 'undefined'?
– TomeeNS
Feb 13 '19 at 15:29
1
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Fast way of finding lines in one file that are not in another?
... index by lineno
(NR!=FNR) { ss2[$0]++; } # file2, index by string
END {
for (ll=1; ll<=nl1; ll++) if (!(ll1[ll] in ss2)) print ll1[ll]
}
This stores the entire contents of file1 line by line in a line-number indexed array ll1[], and the entire contents of file2 line by line ...
HTML5 record audio to file
...; 0 ? s * 0x8000 : s * 0x7FFF, true);
}
}
function writeString(view, offset, string){
for (var i = 0; i < string.length; i++){
view.setUint8(offset + i, string.charCodeAt(i));
}
}
function encodeWAV(samples){
var buffer = new ArrayBuffe...
Is there a way to word-wrap long words in a div?
... text (inferred by his use of word-wrap for IE, designed to break unbroken strings).
/* Source: http://snipplr.com/view/10979/css-cross-browser-word-wrap */
.wordwrap {
white-space: pre-wrap; /* CSS3 */
white-space: -moz-pre-wrap; /* Firefox */
white-space: -pre-wrap; /* O...
Android: how to hide ActionBar on certain activities
...idManifest.xml:
<activity android:name=".Activity"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category....
Get value from JToken that may not exist (best practices)
...e GetValue as below
public static T GetValue<T>(this JToken jToken, string key, T defaultValue = default(T))
{
dynamic ret = jToken[key];
if (ret == null) return defaultValue;
if (ret is JObject) return JsonConvert.DeserializeObject<T>(ret.ToString());
return (T)ret;
}
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What is this CSS selector? [class*=“span”]
...omething"></div>
Good references
CSS3 Attribute Selectors: Substring Matching
The 30 CSS Selectors you Must Memorize
W3C CSS3 Selectors
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Best way to show a loading/progress indicator?
...harSequence title, CharSequence message); Passing title parameter as empty string removes the title: ProgressDialog.show(context, "", "Loading..");
– Rajendra
Oct 11 '12 at 15:32
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How to format current time using a yyyyMMddHHmmss format?
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The layout string is a representation of the time stamp, Jan 2 15:04:05 2006 MST. An easy way to remember this value is that it holds, when presented in this order, the values (lined up with the elements above): 1 2 3 4 5 6 -7...
How to replace innerHTML of a div using jQuery?
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The html() function can take strings of HTML, and will effectively modify the .innerHTML property.
$('#regTitle').html('Hello World');
However, the text() function will change the (text) value of the specified element, but keep the html structure.
$(...