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Capturing Groups From a Grep RegEx
... name="${BASH_REMATCH[1]}"
echo "${name}.jpg" # concatenate strings
name="${name}.jpg" # same thing stored in a variable
else
echo "$f doesn't match" >&2 # this could get noisy if there are a lot of non-matching files
fi
done
It's better to put the ...
Any reason not to use '+' to concatenate two strings?
A common antipattern in Python is to concatenate a sequence of strings using + in a loop. This is bad because the Python interpreter has to create a new string object for each iteration, and it ends up taking quadratic time. (Recent versions of CPython can apparently optimize this in some cases, b...
Windows XP or later Windows: How can I run a batch file in the background with no window displayed?
...
Possible, but I will try to avoid any extra step in this instance.
– VonC
Nov 18 '08 at 15:54
21
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A numeric string as array key in PHP
Is it possible to use a numeric string like "123" as a key in a PHP array, without it being converted to an integer?
11 A...
What is the difference between XML and XSD?
...<xs:sequence>
<xs:element name="child_one" type="xs:string" />
<xs:element name="child_two" type="xs:int" />
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType...
How to use onSavedInstanceState example please
...re are more) of put functions you can use to store data in the Bundle.
putString
putBoolean
putByte
putChar
putFloat
putLong
putShort
putParcelable (used for objects but they must implement Parcelable)
In your onCreate function, this Bundle is handed back to the program. The best way to check if ...
HTML5 form required attribute. Set custom validation message?
...ly answered. If setCustomValidity is set to anything other than the empty string it will cause the field to be considered invalid; therefore you must clear it before testing validity, you can't just set it and forget.
Further edit
As pointed out in @thomasvdb's comment below, you need to clear the ...
Differences between Octave and MATLAB? [closed]
...cking to a superior syntax... if you had the freedom to change Matlab, add extra syntax or different functions, wouldn't you? These are features that users implemented and they don't break compatibility. More often that not, new things are rejected on grounds of that. The idea is that Matlab languag...
How to read a file in Groovy into a string?
...ed to read a file from the file system and load the entire contents into a string in a groovy controller, what's the easiest way to do that?
...
“Conversion to Dalvik format failed with error 1” on external JAR
...ject properties which caused both android.jar's to conflict. Removing the extra in the Java Build Path did the trick
– styler1972
Aug 4 '11 at 18:50
2
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