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Using a BOOL property
...something else than the property (he's not asking if properties are a good idea). Also, properties allow for KVO and KVC, so the point you do make is misleading.
– Martin Gjaldbaek
Feb 1 '11 at 16:43
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Rails - Validate Presence Of Association?
...od I can call to make sure this is true, or do I need to write a custom validation?
4 Answers
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Regex to match a digit two or four times
...sing alternation to match 4 digits first, then 2 digits. Also good job providing the other variations.
– Ahmad Mageed
Nov 18 '11 at 2:57
9
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What is the difference between LINQ ToDictionary and ToLookup
...hat key), and there is no mutate on the ILookup<,> interface.
As a side note, you can query a lookup (via the indexer) on a key that doesn't exist, and you'll get an empty sequence. Do the same with a dictionary and you'll get an exception.
So: how many records share each key?
An overly sim...
How can I hide an HTML table row so that it takes up no space?
How can I hide an HTML table row <tr> so that it takes up no space? I have several <tr> 's set to style="display:none;" , but they still affect the size of the table and the table's border reflects the hidden rows.
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How to restart Activity in Android
How do I restart an Android Activity ? I tried the following, but the Activity simply quits.
21 Answers
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What does the tilde (~) mean in my composer.json file?
...ries using semantic versioning scheme.
Semantic versioning is more of a guideline that evaluates to the next significant release.
For Composer, this operator means to allow minor releases (that can include patches) without allowing a major version (that may not be backward compatible) while instal...
Invoke-WebRequest, POST with parameters
...ple.com/service -ContentType "application/json" -Method POST -Body "{ 'ItemID':3661515, 'Name':'test'}"
or the equivalent for XML, etc.
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SharedPreferences.onSharedPreferenceChangeListener not being called consistently
...reference to the listener in a field of your class and you will be OK, provided your class instance is not destroyed.
i.e. instead of:
prefs.registerOnSharedPreferenceChangeListener(
new SharedPreferences.OnSharedPreferenceChangeListener() {
public void onSharedPreferenceChanged(SharedPreferen...
How to run multiple DOS commands in parallel?
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
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