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Getting the first character of a string with $str[0]
...am just not sure whether this is 'good practice', as that notation is generally used with arrays. This feature doesn't seem to be very well documented so I'm turning to you guys to tell me if it's all right – in all respects – to use this notation?
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How to avoid annoying error “declared and not used”
...s it easier to read code written by other people (you are always sure that all declared variables will be used), and avoid some possible dead code.
But, if you really want to skip this error, you can use the blank identifier (_) :
package main
import (
"fmt" // imported and not used: "fmt"
)
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Python json.loads shows ValueError: Extra data
...) # == json.loads(json.dumps({}) + json.dumps({}))
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Python27\lib\json\__init__.py", line 338, in loads
return _default_decoder.decode(s)
File "C:\Python27\lib\json\decoder.py", line 368, in decode
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Verifying that a string contains only letters in C#
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This assumes a latin alphabet, where Char.IsLetter allows for non-latin alphabets.
– Paul van Brenk
Jul 28 '09 at 7:31
5
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List changes unexpectedly after assignment. How do I clone or copy it to prevent this?
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With new_list = my_list, you don't actually have two lists. The assignment just copies the reference to the list, not the actual list, so both new_list and my_list refer to the same list after the assignment.
To actually copy the list, you have various possibilit...
Getting rid of all the rounded corners in Twitter Bootstrap
...global modification for a very boxy-not-round site, which is to get rid of all the rounded corners in Bootstrap...
16 Answ...
How to get an object's property's value by property name?
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@TheMuffinMan, yes, it is a generally applicable feature, like write-host $obj."$somepropertyname"
– Elroy Flynn
May 26 '17 at 1:44
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Trusting all certificates with okHttp
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Just in case anyone falls here, the (only) solution that worked for me is creating the OkHttpClient like explained here.
Here is the code:
private static OkHttpClient getUnsafeOkHttpClient() {
try {
// Create a trust manager that does not...
Can you have multiline HTML5 placeholder text in a ?
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For <textarea>s the spec specifically outlines that carriage returns + line breaks in the placeholder attribute MUST be rendered as linebreaks by the browser.
User agents should present this hint to the user when the element's value is the empty string a...
How to read/process command line arguments?
I am originally a C programmer. I have seen numerous tricks and "hacks" to read many different arguments.
17 Answers
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