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Split Java String by New Line
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@antak yes, split by default removes trailing empty strings if they ware result of split. To turn this mechanism off you need to use overloaded version of split(regex, limit) with negative limit like text.split("\\r?\\n", -1). More info: Java String s...
What is a elegant way in Ruby to tell if a variable is a Hash or an Array?
... @Brandon second example should convert the class to string.<br/>["Hash", "Array"].include?(@some_var.class.to_s) #=> check both through instance class
– OBCENEIKON
Jun 5 '15 at 16:27
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What is the difference between '&' and ',' in Java generics?
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<T extends MyClass & Serializable>
This asserts that the single type parameter T must extend MyClass and must be Serializable.
<T extends MyClass , Serializable>
This declares two type parameters, one call...
How to return an empty ActiveRecord relation?
...e is a now a "correct" mechanism in Rails 4:
>> Model.none
=> #<ActiveRecord::Relation []>
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Where is debug.keystore in Android Studio
...ct Structure > select project > go to "signing" and select your default or any keystore you want and fill all the details. In case you are not able to fill the details, hit the green '+' button. I've highlighted in the screenshot.
Step 2) VERY IMPORTANT: Goto Build Types> select your build...
How to generate unique ID with node.js
...fghijklmnopqrstuvwxyz1234567890',
var str = '';
for(var i = 0; i < count; i++) {
str += _sym[parseInt(Math.random() * (_sym.length))];
}
base.getID(str, function(err, res) {
if(!res.length) {
k(str) // use the continuation
} els...
How to sort an array based on the length of each element?
...of list
def sort_len(a):
num = len(a)
d = {}
i = 0
while i<num:
d[i] = len(a[i])
i += 1
b = list(d.values())
b.sort()
c = []
for i in b:
for j in range(num):
if j in list(d.keys()):
if d[j] == i:
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Assign null to a SqlParameter
...u need using null-able value as an entrance parameter of function that result consume SqlParameter and if it is null you've got error this way is not work and you should use just simple If-Else way. for example: sample.Text.Trim() != "" ? func(sample.Text) : DBNull.Value; will not work as ?: and ??...
What is the equivalent of “none” in django templates?
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None, False and True all are available within template tags and filters. None, False, the empty string ('', "", """""") and empty lists/tuples all evaluate to False when evaluated by if, so you can easily do
{% if profile.user.first_name == None %}
{% if not profile.user.first_name %}
A ...
Remove all special characters except space from a string using JavaScript
...ers you want to remove:
string = string.replace(/[&\/\\#,+()$~%.'":*?<>{}]/g, '');
Alternatively, to change all characters except numbers and letters, try:
string = string.replace(/[^a-zA-Z0-9]/g, '');
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