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Detecting foreign key conflicts


Detecting foreign key conflicts

By : user
Date : November 22 2020, 02:59 PM
Any of those help I didn't knew what exception to catch by i guess i didn't google hard enough
How can I know if an SQLexception was thrown because of foreign key violation?
code :


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Detecting DownValue/OwnValue conflicts

Detecting DownValue/OwnValue conflicts


By : Harrison
Date : March 29 2020, 07:55 AM
it should still fix some issue You can use Protect[f] to avoid further assignments (of any kind) and Unprotect[f] to allow them again.
You could also do some simple hackery with up-values to prevent Set[f, ...] from actually putting own-values on f but still allowing the assignment of down-values without having to use Protect/Unprotect:
code :
In[76]:= ClearAll[f]

In[77]:= f /: Set[f, x_] := x

In[78]:= f = 7

Out[78]= 7

In[79]:= f

Out[79]= f

In[80]:= f[x_] := x + 1

In[81]:= f[1]

Out[81]= 2
In[93]:= f::noov = "Blocked attempt to assign `1` as an OwnValue of f";

In[94]:= f /: Set[f, x_] := (Message[f::noov, x]; x)

In[95]:= f = 7

During evaluation of In[95]:= f::noov: Blocked attempt to assign 7 as
   an OwnValue of f

Out[95]= 7
Detecting template priority conflicts in XSL

Detecting template priority conflicts in XSL


By : Rahil
Date : March 29 2020, 07:55 AM
help you fix your problem I think you may need to consider writing some simple analysis tools. This is where the fact that XSLT uses XML syntax can really start to give benefits: manipulating XSLT code is much easier than manipulating code in most other languages. If you only need to know about identical match patterns, then you could analyze your code using a 2.0 stylesheet that does something like
code :
<xsl:function name="f:all-modules" as="document-node()*">
  <xsl:param name="root" as="document-node()"/>
  <xsl:sequence select="$root, document($root/*/(xsl:include|xsl:import)/@href)/f:all-modules(.)"/>
</xsl:function>

<xsl:template name="duplicate-patterns">
  <xsl:for-each-group select="f:all-modules(.)//xsl:template" 
        group-by="@match">
    <xsl:if test="current-group()[2]">
      <xsl:copy-of select="current-group()"/>
    </xsl:if>
  </xsl:for-each-group>
</xsl:template>
<xsl:template match="para[1]" mode="mode-7826">1</xsl:template>
<xsl:template match="*" mode="mode-7826"/>

<xsl:template match="para[@class='header']" mode="mode-7827" as="xs:integer">1</xsl:template>
<xsl:template match="*" mode="mode-7827"/>

<xsl:template match="/">
    <xsl:for-each select="//*">
      <xsl:variable name="matches">
        <xsl:apply-templates select="." mode="mode-7826"/>
        <xsl:apply-templates select="." mode="mode-7827"/>
        <xsl:apply-templates select="." mode="mode-7828"/>
        ....
      </xsl:variable>
      <xsl:if test="string-length($matches) gt 1">
        Conflict!!
      </xsl:if>
    </xsl:for-each>
</xsl:template>
Detecting Conflicts on a Scheduler Timeline (Algorithm)

Detecting Conflicts on a Scheduler Timeline (Algorithm)


By : Blaine Christian
Date : March 29 2020, 07:55 AM
I wish this helpful for you The issue is that the "conflicts" relation isn't transitive, hence not an equivalence relation, but you want an equivalence relation so you can put them into equivalence classes that have the horizontal width shared. For this to work, we have to define a new relationship which is an equivalence relation (hence transitive) and then figure out how to compute it.
Getting an equivalence relation could be as easy as taking the transitive closure of your "conflicts" relation. That is, we can "add" all the missing members to make the relation transitive. One way to do this would be to keep your code largely the same, but instead of remembering the last start/end times, remember the first (hence earliest; we still need sorting) start time and the latest stop time, and to use that to detect "conflicts":
code :
   // first event is the current event
   lastMaxEndTime = CurrentEvent EndTime

   if NextEvent exists {

      // if the maximum end time considered in
      // the conflicting component currently
      // under consideration extends beyond the
      // the next event's start time, then this
      // and everything that "conflicts" with it
      // is also defined to "conflict" with NextEvent
      if (lastMaxEndTime > NextEvent StartTime) { // CONFLICT!
         overlappingMode = true;
         overlappingEvents.add(currentEvent); // Add to array
         lastMaxEndTime = max(lastMaxEndTime, NextEvent EndTime)
      }
      else {  // NO CONFLICT
         if (overlappingMode is TRUE) {
            // Resolve Now
            redrawOverlappingEvents(overlappingEvents);
            // Reset
            overlappingMode = false;
            EMPTY overlappingEvents;
         }

         // everything that starts earlier than me,
         // ends before I start. so start over
         lastMaxEndTime = NextEvent EndTime
      }
   }
lastMaxEndTime = 2:00
lastMaxEndTime > 2:30? no, so
    lastMaxEndTime = 3:30
lastMaxEndTime > 3:00? yes, so
    lastMaxEndTime = max(3:30, 5:00) = 5:00
lastMaxEndTime > 3:15? yes, so
    lastMaxEndTime = max(5:00, 4:30) = 5:00 <--- this fixed it
lastMaxEndTime > 4:45? yes, so
    lastMaxEndTime = max(5:00, 6:00) = 6:00
Detecting dependency conflicts with Maven

Detecting dependency conflicts with Maven


By : user3026959
Date : March 29 2020, 07:55 AM
this will help You can setup a dependencyConvergence enforcer rule in Maven. This rule requires that dependency version numbers converge.
If a project has two dependencies, A and B, both depending on the same artifact, C, this rule will fail the build if A depends on a different version of C than the version of C depended on by B.
code :
<project>
  ...
  <build>
    <plugins>
      ...
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-enforcer-plugin</artifactId>
        <version>3.0.0-M2</version>
        <executions>
          <execution>
            <id>enforce</id>
            <configuration>
              <rules>
                <dependencyConvergence/>
              </rules>
            </configuration>
            <goals>
              <goal>enforce</goal>
            </goals>
          </execution>
        </executions>
      </plugin>
      ...
    </plugins>
  </build>
  ...
</project>
detecting conflicts in recurring events

detecting conflicts in recurring events


By : user3765388
Date : March 29 2020, 07:55 AM
hop of those help? First of all, you can improve this by just causing an early function-return:
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