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getting type T from IEnumerable
... Or even worse write a method with yield returns and try to call GetType on a variable created with this method. It will tell you that it is not event a generic type. So basically there is no universal way to get T given an instance variable of type IEnumerable<T>
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How do you convert a time.struct_time object into a datetime object?
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This will usually work. However, it will fail if the time tuple is beyond the values mktime accepts, for example for the value (1970, 1, 1, 0, 0, 0, 0, 1, -1). I have encountered this after parsing the Date header on an HTTP request which...
How to ignore a property in class if null, using json.net
...y("property_name", NullValueHandling=NullValueHandling.Ignore)]
// or for all properties in a class
[JsonObject(ItemNullValueHandling = NullValueHandling.Ignore)]
As seen in this online doc.
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AngularJS: Is there any way to determine which fields are making a form invalid?
...lowing code in an AngularJS application, inside of a controller,
which is called from an ng-submit function, which belongs to a form with name profileForm :
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How to search file text for a pattern and replace it with a given value
...ull. This code is not fit for anything beyond a quick one-off script where all the data is backed up. For that reason, do NOT copy this code into your programs.
Here's a quick short way to do it.
file_names = ['foo.txt', 'bar.txt']
file_names.each do |file_name|
text = File.read(file_name)
ne...
Having a UITextField in a UITableViewCell
...ntifier:kCellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:kCellIdentifier] autorelease];
cell.accessoryType = UITableViewCellAccessoryNone;
if ([indexPath section] == 0) {
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Define global variable in a JavaScript function
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Yes, as the others have said, you can use var at global scope (outside of all functions) to declare a global variable:
<script>
var yourGlobalVariable;
function foo() {
// ...
}
</script>
Alternately, you can assign to a property on window:
<script>
function foo() {
wi...
Find duplicate lines in a file and count how many time each line was duplicated?
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This is what I do however algorithmically this is doesnt seem to be the most efficient approach (O(n log n)*avg_line_len where n is number of lines). I'm working on files that are several gigabytes large, so performance is a key issue. I wonder whether there is ...
Search all tables, all columns for a specific value SQL Server [duplicate]
I have a specific value, let's say string 'comments'. I need to find all instances of this in the database as I need to do an update on the format to change it to (*) Comments.
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How to change letter spacing in a Textview?
...oper.android.com/reference/android/widget/…
– Evin1_
Sep 20 '19 at 16:43
maybe add @Evin1_'s comment in ur answer
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