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Is there a short cut for going back to the beginning of a file by vi editor?
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using :<line number> you can navigate to any line, thus :1 takes you to the first line.
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How does the const constructor actually work?
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They are also useful for default-values in method signatures.
– Florian Loitsch
Feb 13 '14 at 10:50
1
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Objective-C: Reading a file line by line
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That's a great question. I think @Diederik has a good answer, although it's unfortunate that Cocoa doesn't have a mechanism for exactly what you want to do.
NSInputStream allows you to read chunks of N bytes (very similar to java.io.BufferedReader), but you have to convert it to an NSSt...
String concatenation does not work in SQLite
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Try using || in place of +
select locationname || '<p>' from location;
From SQLite documentation:
The || operator is "concatenate" - it joins together the two strings of its operands.
shar...
Switching between Android Navigation Drawer image and Up caret when using fragments
....home:
onBackPressed();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
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What is a good use case for static import of methods?
... with readability of the overall statement. Consider a formula involving multiple trigonometric functions. An easily grasped math formula: sin x cos y + cos x sin y. In Java becomes: Math.sin(x) * Math.cos(y) + Math.cos(x) * Math.sin(y). Horrible to read.
– ToolmakerSteve
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How do I remove a file from the FileList
... of the input object to an empty string, like:
document.getElementById('multifile').value = "";
BTW, the article Using files from web applications might also be of interest.
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Why would one use the Publish/Subscribe pattern (in JS/jQuery)?
... {
removed = this.books.splice(book, 1);
}
for (var i = 0; i < this.books.length; i += 1) {
if (this.books[i] === book) {
removed = this.books.splice(i, 1);
}
}
$.publish('book-removed', removed);
return removed;
}
//View
var BookListView = (function (...
How do I get the APK of an installed app without root access?
...kageManager pm = getPackageManager();
//get a list of installed apps.
List<ApplicationInfo> packages = pm.getInstalledApplications(PackageManager.GET_META_DATA);
for (ApplicationInfo packageInfo : packages) {
Log.d(TAG, "Installed package :" + packageInfo.packageName);
Log.d(TAG, "Ap...
How do you push a Git tag to a branch using a refspec?
...objects: 1, done.
Writing objects: 100% (1/1), 180 bytes, done.
Total 1 (delta 0), reused 0 (delta 0)
To git@github.com:neoneye/triangle_draw.git
* [new tag] v1.1 -> v1.1
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