大约有 48,000 项符合查询结果（耗时：0.0621秒） [XML]
Is there a way to 'uniq' by column?
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Good to know. Thx! (Of course this makes sense, thinking of "cat" and "lazyness" ;))
– Carsten C.
Dec 17 '09 at 7:19
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How to set -source 1.7 in Android Studio and Gradle
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Java 7 support was added at build tools 19. You can now use features like the diamond operator, multi-catch, try-with-resources, strings in switches, etc. Add the following to your build.gradle.
android {
compileSdkVersion 19
buildToolsVersion "19.0.0"
defaultCon...
Why wasn't PyPy included in standard Python?
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It is worth noting that PyPy now comes with an incremental GC, and is potentially more suitable for games as a consequence.
– porgarmingduod
Oct 23 '13 at 11:55
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Why does 1==1==1 return true, “1”==“1”==“1” return true, and “a...
...o being compared to true and is thus also considered to be equal to true.
Now, the "WHY?!?!" question is explained by the fact that Javascript has its roots in the C-family of languages. In which any number, other than 0 is considered to be a valid true boolean. :-/
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CSV new-line character seen in unquoted field error
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This now gives the same error, but on line starting upload.num_records = csvobject.get_row_count() now
– GrantU
Jun 26 '13 at 9:19
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In java how to get substring from a string till a character c?
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//in string thus giving you the index of where it is in the string
// Now iend can be -1, if lets say the string had no "." at all in it i.e. no "." is found.
//So check and account for it.
String subString;
if (iend != -1)
{
subString= filename.substring(0 , iend); //this will give abc
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How to center a “position: absolute” element
... element that has the attribute position set to absolute .
Does anyone know why the images are not centered?
26 Answers
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How to cast Object to its actual type?
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If you know the actual type, then just:
SomeType typed = (SomeType)obj;
typed.MyFunction();
If you don't know the actual type, then: not really, no. You would have to instead use one of:
reflection
implementing a well-known inte...
Simple (non-secure) hash function for JavaScript? [duplicate]
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That makes more sense to me now; previously you had something like hex_md5("message_digest") = "fb6cecc85a100197ae3ad68d1f9f2886", right? (Can't find the revision of your answer.)
– mjs
May 25 '11 at 10:31
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How do I rename a project in Xcode 5?
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Xcode 6 (beta 6 as of now) seems to be not very reliable with renaming projects. For me it didn't rename several of the files and groups. It also doesn't rename the physical folder the project is in. To rename my project to be sure that everything...