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How to get the first word of a sentence in PHP?
I want to extract the first word of a variable from a string. For example, take this input:
22 Answers
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Get Android .apk file VersionName or VersionCode WITHOUT installing apk
...
final PackageManager pm = getPackageManager();
String apkName = "example.apk";
String fullPath = Environment.getExternalStorageDirectory() + "/" + apkName;
PackageInfo info = pm.getPackageArchiveInfo(fullPath, 0);
Toast.makeText(this, "VersionCode : " + info.versi...
JavaScript/jQuery to download file via POST with JSON data
... body, appends the iframe HTML, and sets the innerHTML of the page to that string. This will wipe out any event bindings your page has, amongst other things. Create an element and use appendChild instead.
$.post('/create_binary_file.php', postData, function(retData) {
var iframe = document.create...
How to dynamic new Anonymous Class?
...ove fields on the fly.
edit
Sure you can: just cast it to IDictionary<string, object>. Then you can use the indexer.
You use the same casting technique to iterate over the fields:
dynamic employee = new ExpandoObject();
employee.Name = "John Smith";
employee.Age = 33;
foreach (var propert...
Deleting Row in SQLite in Android
...like this:
//---deletes a particular title---
public boolean deleteTitle(String name)
{
return db.delete(DATABASE_TABLE, KEY_NAME + "=" + name, null) > 0;
}
or
public boolean deleteTitle(String name)
{
return db.delete(DATABASE_TABLE, KEY_NAME + "=?", new String[]{name}) > 0;
}
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Python Unicode Encode Error
...ecause theres some foreign Unicode characters. Try to encode your unicode string as ascii first:
unicodeData.encode('ascii', 'ignore')
the 'ignore' part will tell it to just skip those characters. From the python docs:
>>> u = unichr(40960) + u'abcd' + unichr(1972)
>>> u.enco...
Java; String replace (using regular expressions)?
As part of a project for school, I need to replace a string from the form:
12 Answers
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Java - escape string to prevent SQL injection
...in java and am finding it very difficult to work with the the "replaceAll" string function. Ultimately I need a function that will convert any existing \ to \\ , any " to \" , any ' to \' , and any \n to \\n so that when the string is evaluated by MySQL SQL injections will be blocked.
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Count number of matches of a regex in Javascript
...r a generic way to count the number of occurrences of a regex pattern in a string, and don't want it to fail if there are zero occurrences, this code is what you need. Here's a demonstration:
/*
* Example
*/
const count = (str) => {
const re = /[a-z]{3}/g
return ((str || '').ma...
Why are arrays covariant but generics are invariant?
...exactly the type Object[]. One could not, for example, shuffle an array of strings.
Therefore, both Java and C# treat array types covariantly. For instance, in C# string[] is a subtype of object[], and in Java String[] is a subtype of Object[].
This answers the question "Why are arrays covari...