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When is it right for a constructor to throw an exception?
When is it right for a constructor to throw an exception? (Or in the case of Objective C: when is it right for an init'er to return nil?)
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Warn user before leaving web page with unsaved changes
...the a flag that you're submitting a form:
var formSubmitting = false;
var setFormSubmitting = function() { formSubmitting = true; };
window.onload = function() {
window.addEventListener("beforeunload", function (e) {
if (formSubmitting) {
return undefined;
}
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How to get a group of toggle buttons to act like radio buttons in WPF?
... for its ItemTemplate
<Style TargetType="{x:Type ListBox}">
<Setter Property="ListBox.ItemTemplate">
<Setter.Value>
<DataTemplate>
<ToggleButton Content="{Binding}"
IsChecked="{Binding IsSelected, Mode...
Android: How to bind spinner to custom object list?
...rrays in your array.xml file -- one array for labels, one array for values
Set your Spinner with android:entries="@array/labels"
When you need a value, do something like this (no, you don't have to chain it):
String selectedVal = getResources().getStringArray(R.array.values)[spinner.getSelected...
Git rebase: conflicts keep blocking progress
I have a git branch (called v4), that was made from master just yesterday. There were a couple of changes to master, that I want to get into v4. So, in v4, I tried to do a rebase from master, and one file keeps screwing things up: a one-line text file, that contains the version number. This file ...
Difference between Hive internal tables and external tables?
...ly if you are pointing multiple schemas (tables or views) at a single data set or if you are iterating through various possible schemas.
You want to use a custom location such as ASV.
Hive should not own data and control settings, dirs, etc., you have another program or process that will do those th...
Nodemailer with Gmail and NodeJS
...google with the account I want to send mail from):
https://www.google.com/settings/security/lesssecureapps
There I enabled less secure apps.
Done
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Best way to test for a variable's existence in PHP; isset() is clearly broken
From the isset() docs :
17 Answers
17
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WCF - How to Increase Message Size Quota
...to change it on the server -- in the event you need to send in a large dataset as a parameter to a WCF Method.
– Nate
May 19 '09 at 19:08
9
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How to use count and group by at the same select statement
...tion and comments)
You can declare a variable for the number of users and set it to the number of users then select with that.
DECLARE @numOfUsers INT
SET @numOfUsers = SELECT COUNT(*) FROM user
SELECT DISTINCT town, @numOfUsers
FROM user
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