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How do I prompt for Yes/No/Cancel input in a Linux shell script?
...is:
set -- $(locale LC_MESSAGES)
yesptrn="$1"; noptrn="$2"; yesword="$3"; noword="$4"
while true; do
read -p "Install (${yesword} / ${noword})? " yn
case $yn in
${yesptrn##^} ) make install; break;;
${noptrn##^} ) exit;;
* ) echo "Answer ${yesword} / ${noword}.";;
...
Why is the default value of the string type null instead of an empty string?
...ublic static string EmptyNull(this string str)
{
return str ?? "";
}
Now this works safely:
string str = null;
string upper = str.EmptyNull().ToUpper();
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...
Detect Chrome extension first run / update
...
Updated answer to reflect v3 of manifest:
Chromium now has a chrome.runtime set of APIs, which allow you to fetch the version of the extension.
To get the current version:
chrome.runtime.getManifest().version
To listen when the extension has been first installed, when th...
Difference between Hashing a Password and Encrypting it
...erse operation (generation of password from converted-word) is impossible. Now even if someone gets access to the database, there is no way that the passwords be reproduced or extracted using the converted-words. In this approach, there will be hardly anyway that some could know your users' top secr...
Best way to structure a tkinter application? [closed]
...
@Bryan Oakley do you know any good sample codes on internet that i can study their structure?
– Chris Aung
Jul 5 '13 at 8:35
3
...
NSString property: copy or retain?
...ing mutable strings": That might work for your own strings, but you never know about strings you receive from frameworks.
– Nikolai Ruhe
May 27 '10 at 12:18
7
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How to create Android Facebook Key Hash?
...e and password etc. Store it as a .jks file at a folder easily accessible. Now copy the path and generate the key by replacing that path in the above mentioned answer.
– buggydroid
Dec 9 '15 at 11:08
...
Bold & Non-Bold Text In A Single UILabel?
...istance(from: nonBoldRange!.lowerBound, to: nonBoldRange!.upperBound))
// Now just build the attributed string as before :)
label.attributedText = attributedString(from: targetString,
nonBoldRange: nonBoldNSRange)
Result (Assuming English and Japanese Local...
Calling Python in Java?
...cpython! You do not need any jni or jna or swig or .... You don't need to know any c, or c++. kool huh?
Advantages: Access to cpython, not as difficult as following methods
Disadvantages: Cannot change the member data of java objects directly from python. Is somewhat indirect, (jython is middle man)...
Why is __init__() always called after __new__()?
...it__ takes self as parameter. Until you create instance there is no self.
Now, I gather, that you're trying to implement singleton pattern in Python. There are a few ways to do that.
Also, as of Python 2.6, you can use class decorators.
def singleton(cls):
instances = {}
def getinstance(...