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How does Google Instant work?
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Git 工具 - 子模块(submodule)：一个仓库包含另一个仓库 - 开源 & Github -...
...y and index state WIP on stable: 82d2ad3 Merge from origin/stable
HEAD is now at 82d2ad3 Merge from origin/stable
然后我们可以创建一个新分支，并将所有子模块都切换过去。
$ git submodule foreach 'git checkout -b featureA'
Entering 'CryptoLibrary'
Switched ...
What is the list of supported languages/locales on Android?
I'd like to know what to name my folder for different languages. Where can I find the supported list of languages on Android?
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How to use if - else structure in a batch file?
I have a question about if - else structure in a batch file. Each command runs individually, but I couldn't use "if - else" blocks safely so these parts of my programme doesn't work. How can I do make these parts run? Thank you.
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Oracle: If Table Exists
...n Oracle database, and was hoping Oracle had something similar to MySQL's IF EXISTS construct.
15 Answers
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Is “else if” a single keyword?
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They are not a single keyword if we go to the draft C++ standard section 2.12 Keywords table 4 lists both if and else separately and there is no else if keyword. We can find a more accessible list of C++ keywords by going to cppreferences section on keyw...
if else in a list comprehension [duplicate]
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>>> l = [22, 13, 45, 50, 98, 69, 43, 44, 1]
>>> [x+1 if x >= 45 else x+5 for x in l]
[27, 18, 46, 51, 99, 70, 48, 49, 6]
Do-something if <condition>, else do-something else.
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Bash if [ false ] ; returns true
...command always succeeds. To actually run the command, drop the [ command.
if false; then
echo "True"
else
echo "False"
fi
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Logical operators (“and”, “or”) in DOS batch
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You can do and with nested conditions:
if %age% geq 2 (
if %age% leq 12 (
set class=child
)
)
or:
if %age% geq 2 if %age% leq 12 set class=child
You can do or with a separate variable:
set res=F
if %hour% leq 6 set res=T
if %hour% geq 22 set ...
Checking for empty arrays: count vs empty
This question on ' How to tell if a PHP array is empty ' had me thinking of this question
12 Answers
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